CN101701297A - Ore blending and smelting method for ocean cobalt-rich crusts - Google Patents
Ore blending and smelting method for ocean cobalt-rich crusts Download PDFInfo
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Abstract
The invention discloses an ore blending and smelting method for ocean cobalt-rich crusts, which comprises the steps of ore blending and smelting, wherein the ore blending step is to blend more than one ocean cobalt-rich crusts and more than one ocean polymetallic nodule. The ore blending and smelting method for the ocean cobalt-rich crusts has the advantages that the process is further optimized, the production cost is low, the energy consumption is low, and the product quality and the yield are further improved.
Description
Technical field
The present invention relates to the melting method that a kind of seabed contains the manganese polymetallic ore, relate in particular to and a kind of different classes of seabed is contained the method that the manganese polymetallic ore is joined the ore deposit melting.
Background technology
Oceanic cobalt-rich crust is that the two kinds of different polymetallic ores in seabed produce resource with oceanic multi-metal nodule, is rich in Mn, Fe, Cu, Co, Ni, therefore also becomes human important potential metals resources.West advanced countries such as U.S., moral, method, day and in, developing country such as seal, Korea Spro dropped into substantial contribution in the extraction emtallurgy research of valuable metal, developed multiple smelting complete processing, wherein melting-lixiviation process is considered to one of extraction metallurgical method of tool development prospect.
The pyrogenic process enrichment is the first step of melting-extract technology, and purpose is to realize separating of valuable metal Mn and Cu, Co, Ni and harmful element P.Rich manganese slag method is all adopted in the pyrogenic process enrichment of existing oceanic multi-metal nodule, and the pyrogenic process enrichment of oceanic cobalt-rich crust can be adopted rich manganese slag method or manganeseirom method.The manganeseirom method is meant ferromanganese smelting alloy under high temperature and high basicity condition earlier, and whole valuable metals such as Mn, Fe, Cu, Co, Ni and P are reduced at this moment, obtain manganeseirom.These methods of human such as Germany P.Halbach have been carried out the pyrogenic process enrichment research of Middle Pacific cobalt-bearing crust, oceanic cobalt-rich crust prereduction under 900 ℃～1100 ℃ temperature earlier, under the temperature about 1600 ℃, adopt basic slag to smelt then, obtain containing the manganeseirom of Mn60%, Fe30%, Co5%, Ni5%, Pt0.0003%, gangue component major part enters slag; Again manganeseirom is carried out oxidation blowing, obtain to contain the master alloy of Co15%, Ni 15%, as the further raw material of extraction Co, Ni, but do not consider the recycling of Mn with this.Rich manganese slag method is meant at lesser temps (generally be 1280 ℃～1350 ℃, the highest be no more than 1420 ℃) and low basicity (CaO/SiO
2≤ 0.3, employing strongly-acid slag operation) carries out the selective reduction melting under the condition, suppress the reduction of Mn and promote the reduction of P, the molten alloy of Fe, Cu, Co, Ni, P that obtained rich manganese slag and enrichment is realized separating of manganese and other valuable metals and gangue element.International nickel Co. Ltd. Inco. Ltd. (INCO) has carried out the pyrogenic process enrichment smelting test of oceanic multi-metal nodule with rich manganese slag method, specifically be to adopt prereduction-electric furnace molten division technique in tuberculosis ore deposit to carry out melting research, its employed oceanic multi-metal nodule contains Mn23.2%, Fe6.9%, P0.22%, Cu0.5%, Co0.22%, Ni1.14%, Ca1.8%, Mg2.9%, Si18.4%, this method is elder generation's prereduction manganese nodule under 900 ℃～1100 ℃ temperature, prereduction is carried out in rotary kiln, and reducing gas is formed and comprised H
28.7%, H
2O6.7%, CO14.7%, CO
26.7%, surplus N
2, the recovery time is 30min; Under 1380 ℃～1420 ℃ temperature, carry out whole reduction (recovery time 60min) then and separate slag iron, obtain the molten alloy that contains the rich manganese slag of Mn32%, P0.13%, Fe1.26% and contain Cu8.7%, Co2.3%, Ni13.7% at last.In the above-mentioned rich manganese slag method the further recovery (as the quality problems of rich manganese slag) of Mn and P behavior in smelting process etc. are not furtherd investigate equally.
Therefore, though Mn content is higher in oceanic cobalt-rich crust and the oceanic multi-metal nodule, but in some American-European countries, people usually are thought of as them a kind of Co ore deposit or Ni ore deposit, though thinking, they contain quite high manganese in oceanic cobalt-rich crust and the oceanic multi-metal nodule, but abundant high-quality Mn ore deposit, land is the preferential resource of this metal with continuing, and the economic implications that extracts Mn from oceanic cobalt-rich crust and oceanic multi-metal nodule is doubted.Therefore, in their research work, the associated problem of recycling with Mn all do not have conscientious research as the kind and the quality problems of the distribution of P in the smelting process and trend, Mn product.As everyone knows, world's Mn output is to be that the form of iron alloy is used for ferrous metallurgy with manganese more than 90%, and manganese is that iron alloy is for the strictness of P content requirement, therefore, to be the form recycling oceanic cobalt-rich crust of iron alloy and the manganese in the oceanic multi-metal nodule with manganese, just must study distribution and the trend of P in the smelting process simultaneously, the P content in the control related products, the quality of production is qualified comprehensively, the product of extensive market.
China is that the first in the world is produced steel big country, but the metallurgical manganese ore chronic shortage of using.Smelting-rust corrosion-extraction process is China ocean mineral metal products resources processing research worker abroad on the basis of melting-lixiviation process, a kind of novel process that meets the international seabed mineral resources characteristic of China of exploitation through improving.The characteristics of this novel process are in the fusion process of oceanic multi-metal nodule, oceanic cobalt-rich crust, have both taken into full account the high efficiency extraction of Cu, Co, Ni, according to the national conditions of China's metallurgical manganese ore shortage, take into full account recovery and the utilization of Mn simultaneously.Changsha Mining ﹠ Metallurgy Inst has finished small-sized smelting trial in the Si-Mo rod stove in 1992, the manganese nodule that uses contains Mn28.07%, Fe5.85%, P0.2%, the silica of adding 3% and 5.8% coke powder in the batching, melting under 1420 ℃ temperature after making ball, the rich manganese slag of acquisition contains manganese 36.83%, P0.12%; Finished the melting expanding test in 1999, the manganese nodule sample that uses contains Mn30.57%, Fe5.06%, batching is made and is added 2% silica in the ball, and retailoring is carried out on the 60KVA direct current electric arc furnace, and the rich manganese slag of acquisition contains Mn41.85%, Fe0.54%, P0.022%; Finished the melting interim test in 2004 again, the manganese nodule sample that uses contains Mn23.63%, Fe9.42%, adopt the natural alkalinity melting, smelting trial is carried out on the 200KVA direct current electric arc furnace, and the rich manganese slag of acquisition contains Mn35.49%, Fe0.48%, P0.022%.Therefore, mainly study the extraction of Co, Ni, Cu with more external investigators and to ignore the extraction of Mn different, China's ANOMALY IN FINE QUALITY MANGANESE DEPOSITS stone shortage, in the smelting technology of research and development oceanic cobalt-rich crust, oceanic multi-metal nodule, extraction to manganese attaches equal importance to, and is constantly optimizing its extraction process.Over more than 20 year, through the expanding test that 150kg/ stove scale and different quality ores are arrived in the small-sized exploratory experiment of the 100g/ stove scale of associating, this novel process for smelting has obtained further perfect.
Join mining and metallurgy and refine the first step that rich manganese slag is above-mentioned melting-corrosion-extraction extraction metallurgical technology, the rich manganese slag of output is smelted silicomanganese (product) in subsequent technique, the molten alloy enrichment of output Co, Ni, Cu, Fe, P, in follow-up hydrometallurgy, isolate Co, Ni, Cu, Fe, P product.The successful methods that above-mentioned rich manganese slag method is land poor manganese ore pyrogenic process enrichment, but, satisfy the quality product requirement in order to enhance productivity and metallurgical effect, the rich manganese slag melting of China explicitly calls for the chemical ingredients of going into the stove manganese ore, that is:
Mn/Fe＝0.3～2.5；
Mn％≥18％；
(Mn+Fe)％＝38％～60％；
Al
2O
3+SiO
2≤35％；
SiO
2/ Al
2O
3〉=1.7; With
CaO/SiO
2≤0.3
Therefore, be not that any one manganese ore all is fit to smelt rich manganese slag, many poor manganese ores should not refine rich manganese slag with single mining and metallurgy because of being difficult to satisfy above-mentioned specification of quality, and for example river bridge manganese ore all should not adopt single mining and metallurgy to refine rich manganese slag because of natural alkalinity height, Huayuan manganese ore because of iron level is low etc. behind the Dao County, Hunan.
The characteristics of oceanic cobalt-rich crust chemical ingredients are: contain the P height, it is low to contain Mn; Contain CaO, MgO height, contain SiO
2Low, the rich manganese slag of single ore deposit natural alkalinity melting output contain Mn low, contain the P height, quality does not reach product requirement, is not suitable for the natural alkalinity melting of single ore deposit.For example a kind of oceanic cobalt-rich crust contains Co0.46%, Mn18.53%, Fe15.75%, CaO5.05%, MgO1.61%, SiO
212.72%, CaO/SiO
2=0.40, (CaO+MgO)/SiO
2=0.52; This oceanic cobalt-rich crust carries out the natural alkalinity melting in the Si-Mo rod stove, dosage of coke is 9%～9.2%, and when smelting temperature was 1420 ℃, slag iron was regardless of, and did not reach the purpose of pyrogenic process enrichment; After smelting temperature is brought up to 1450 ℃, can realize that slag iron separates, but the rich manganese slag that obtains contains Mn (being 32.37%) on the low side, contains P higher (being 0.10%).Changsha Mining ﹠ Metallurgy Inst has finished oceanic cobalt-rich crust and has added the melting exploratory experiment that silica reduces basicity (to 0.29) on the Si-Mo rod stove in 2000, when the reductive agent proportioning is 9.5%, when molten branch temperature is 1360 ℃, the rich manganese slag of output contains Mn32.89%, contain P0.11%, do not obtain qualified rich manganese slag yet; 2004, Changsha Mining ﹠ Metallurgy Inst adopt add the high silicon high-phosphorus manganese in land in the oceanic cobalt-rich crust, the basicity of stove ore and the method (seeing Chinese patent No. 200410046666.7) of P content are gone in reduction, in the smelting trial of 60KVA direct current electric arc furnace, obtained to contain the rich manganese slag of high-quality of Mn36.96%, P0.025%, Fe0.30%, Cu, Co, the Ni rate of recovery in molten alloy is respectively 98.39%, 99.5% and 98.57%.
With respect to oceanic cobalt-rich crust, the characteristics of oceanic multi-metal nodule chemical ingredients are to contain the Mn height, contain Fe, P is low; Natural alkalinity is low.But because of output marine site difference, the composition of oceanic multi-metal nodule changes greatly.For contain Mn lower, contain the higher oceanic multi-metal nodule of Fe and can carry out the natural alkalinity melting of single ore deposit, but for containing the Mn height, contain the low class oceanic multi-metal nodule of Fe, then equally be not suitable for the natural alkalinity melting of single ore deposit with oceanic cobalt-rich crust.For example a kind of manganese nodule contains Mn29.37%, Cu1.32%, Co0.17%, Ni1.52%, Fe5.19%, CaO1.70%, MgO3.00%, SiO
215.39%, CaO/SiO
2=0.11, CaO+MgO/SiO
2=0.30; Be 7% at dosage of coke, 1410 ℃ of following meltings of temperature; When adopting natural alkalinity, slag iron is regardless of; In this manganese nodule, add 9% silica, but slag iron good separation, and acquisition contains the qualified rich manganese slag of Mn35.51%, Fe0.77%, P0.0046%.By adding silica, though such tuberculosis ore deposit can smelt rich manganese slag smoothly, reduced the Mn content in the rich manganese slag, generally be unallowed therefore.
Studies show that more than because the chemical constitution aspect, oceanic cobalt-rich crust and part oceanic multi-metal nodule all are not suitable for smelting separately rich manganese slag.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, the oceanic cobalt-rich crust that provide a kind of process optimization, production cost is low, energy consumption is little, quality product and output are high join the ore deposit melting method.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes be a kind of oceanic cobalt-rich crust join the ore deposit melting method, comprise and join ore deposit, agglomeration and melting step, it is characterized in that: the described ore deposit step of joining is with more than one oceanic cobalt-rich crust and more than one oceanic multi-metal nodule are joined the ore deposit at least.This technical scheme is that to contain Mn according to oceanic cobalt-rich crust low, contain the P height, the natural alkalinity height, should not carry out natural alkalinity melting of single ore deposit and oceanic multi-metal nodule and contain the Mn height, it is low to contain Fe, it is low to contain P, natural alkalinity is low, and the part oceanic multi-metal nodule is crossed the characteristics that high reason also should not be carried out the natural alkalinity melting of single ore deposit because of containing Mn, with oceanic multi-metal nodule with addition of in oceanic cobalt-rich crust, complementation by two kinds of ore chemistry compositions, make and join the ore deposit and increase with respect to oceanic cobalt-rich crust Mn content, P content reduces, obtain Mn at last, Fe, P content and basicity etc. all are suitable for the ore deposit of joining of rich manganese slag melting, and then can adopt traditional rich manganese slag melting technology to carry out melting under the condition of not adding any flux.Because the oceanic cobalt-rich crust of different batches and the chemical ingredients of oceanic multi-metal nodule have certain difference, the quality proportioning also has corresponding variation when therefore joining the ore deposit, the quality of oceanic cobalt-rich crust accounts for 10%～90% of oceanic cobalt-rich crust and oceanic multi-metal nodule total mass when in general, joining the ore deposit.
In the technique scheme, describedly join that each component preferably is controlled in the scope of following requirement in the mixing raw material ore deposit that obtains behind the ore deposit: the massfraction of Mn is more than 18%; The mass ratio of Mn and two kinds of elements of Fe is 1～3; The massfraction sum of Mn and two kinds of elements of Fe is 32%～50%; SiO
2And Al
2O
3The mass ratio of two kinds of materials is not less than 1.7, and SiO
2And Al
2O
3The massfraction sum of two kinds of materials is below 35%; CaO and SiO
2Mass ratio below 0.3; The massfraction of P is less than 0.65%, and the mass ratio of P and Fe is less than 0.06.(be Mn% 〉=18%; Mn/Fe=1～3; (Mn+Fe) %=32%～50%; SiO
2/ Al
2O
3〉=1.7; (Al
2O
3+ SiO
2) %≤35%; And CaO/SiO
2≤ 0.3; P＜0.65%, P/Fe＜0.06).In order to utilize other manganese resources, join the ore deposit except using cobalt-bearing crust and polymetallic nodule, also can add the manganese ore of other kinds, addition is a tolerance with the requirement that each component in the final composite mixing raw material ore deposit that obtains satisfies aforementioned every index.
Rich slag manganese of the prior art is smelted the chemical ingredients of going into the stove manganese ore is had certain requirement, and this is the precondition that high yield and high quality smelts rich manganese slag.Yet China's rich manganese slag melting of tradition is used for handling the ferrimanganic ore deposit more, and the purpose of smelting mainly is the rich manganese of deferrization, and does not consider the separation and concentration of Cu, Co, Ni.The present invention is in the separation and concentration of paying close attention to Cu, Co, Ni and Mn, characteristics according to oceanic cobalt-rich crust and oceanic multi-metal nodule chemical ingredients, and with reference to propose in the prior art to going into the requirement of stove manganese ore chemical ingredients, done necessary adjusting to joining the chemical constitution that the ore deposit requires to reach.For example require CaO and SiO
2Mass ratio below 0.3, that can improve manganese like this goes into the slag rate, promotes the reduction of P, reduces the melting temperature and the viscosity of slag, increases its flowability, separates in order to slag iron.For another example, join Mn behind the ore deposit, Fe content height and can improve the Mn content of rich manganese slag, otherwise the Mn content of rich manganese slag is reduced, even can not smelt qualified rich manganese residue product, but Mn too high levels, slag iron is also difficult to be separated, and can not smelt rich manganese slag smoothly, and therefore the content to Mn, two kinds of elements of Fe also limits.For another example, the quality percentage composition of P is up to 1% in the oceanic cobalt-rich crust, single oceanic cobalt-rich crust uses traditional method can not smelt qualified rich slag manganese, and prior art does not propose the restriction of P content to the chemical ingredients of going into the stove manganese ore, if go into stove manganese ore P too high levels, be difficult to equally smelt qualified rich manganese slag, so above-mentionedly join the restriction that has also replenished in the component of ore deposit P content.
In the technique scheme, described join the ore deposit step after, before the melting step, also can comprise an agglomeration step; Described agglomeration step comprises sintering for agglumeration, pelletizing agglomeration or the agglomeration of the group of pressure.In the technique scheme, described melting step is to adopt one section melting of blast furnace, or adopts one section melting of electric furnace, perhaps adopts two sections meltings of prereduction equipment-electric furnace.One section melting is meant that ore (lump ore, pelletizing, pressure group, agglomerate) goes into stove and directly isolate metal and slag through melting, two sections meltings are meant in first reactor (as prereduction equipment), metal oxide is reduced into metal, but metal and generally not phase-splitting of slag; Then these prereduction material are dropped into second reactor (as electric furnace), improve temperature of reaction, separating metal and slag.Described prereduction equipment comprises rotary kiln, shaft furnace or rotary hearth furnace.Join the ore deposit behind sintering for agglumeration, available blast furnace or electrosmelting; Also available blast furnace carries out melting (blast-furnace smelting is higher to the requirement of mechanical strength of furnace charge, and electric furnace and prereduction equipment are smelted lower to the requirement of mechanical strength of furnace charge) when using high-intensity pellet, pressure nodulizing.Join the ore deposit after pelletizing agglomeration or the agglomeration of the group of pressure, generally adopt electrosmelting.When adopting prereduction equipment (for example rotary kiln), can with fine ore directly into kiln, go into stove and smelt, perhaps after the group of pressure, pelletizing agglomeration, reenter kiln, go into stove and smelt.It still is to adopt two sections meltings of prereduction equipment-electric furnace that those skilled in the art can determine to adopt one section melting of electric furnace at the physicochemical property etc. of taking all factors into consideration treatment scale size, coke electric power resource, employed agglomeration method and going into furnace charge.
In the technique scheme, the reductive agent that adopts in the described melting step is preferably metallurgical coke, also can adopts the incomplete combustion product of coal, refinery coke, pitch coke, gas maked coal, cracking Sweet natural gas or liquid fuel (as CO, the H of heavy oil incomplete combustion output
2Those skilled in the art can adjust and adjust the proportioning of reductive agent according to existing reaction rule and the raw material of selecting for use ore deposit composition, for example when joining the proportioning that can suitably improve reductive agent when the ore deposit iron content increases etc.
Compared with prior art, the invention has the advantages that: by in oceanic cobalt-rich crust, adding oceanic multi-metal nodule, realize the complementation of the two chemical ingredients, optimized the melting technology of oceanic cobalt-rich crust and oceanic multi-metal nodule, make the oceanic cobalt-rich crust and the oceanic multi-metal nodule that can not carry out the natural alkalinity melting of single ore deposit can conveniently carry out melting, and obtain quality and technical index qualified rich manganese slag comprehensively, improve the rate of recovery of Mn and Cu, Co, Ni.Simultaneously, the present invention has simplified the melting technology of oceanic cobalt-rich crust and oceanic multi-metal nodule, available a set of equipment, a kind of technology are carried out the smelting of rich manganese slag, and needn't as single ore deposit separately smelts, use two complete equipments, two kinds of different process, therefore technology of the present invention can reduce initial cost, facility investment and production cost, is convenient to production management simultaneously again.To sum up, the present invention adopts the technology of joining the mining and metallurgy refining further to optimize technology, improves product quality and yield, and reduces consuming, and enhances productivity, and is also significant to Separation and Recovery and the environmental resource protection of optimizing Mn and other valuable metals.
Description of drawings
Fig. 1 is the process flow sheet of the embodiment of the invention.
Embodiment
A kind of oceanic cobalt-rich crust of the present invention join the ore deposit melting method, its technical process may further comprise the steps as shown in Figure 1:
1, joins the ore deposit: at first, select for use the oceanic cobalt-rich crust of four kinds of heterogeneities as shown in table 1 and oceanic multi-metal nodule as the raw material ore deposit, again by the joining the ore deposit and join the ore deposit of table 2, join that the stove pelletizing performance of going in each mixing raw material ore deposit sees Table 3 behind the ore deposit than in oceanic cobalt-rich crust, adding oceanic multi-metal nodule.
Table 1: oceanic cobalt-rich crust and oceanic multi-metal nodule chemical ingredients
Annotate: oceanic cobalt-rich crust and oceanic multi-metal nodule are provided by ocean association, and the DY95-9 in the last table 1 under the denominational item, DY105-11, DY105-15, DY105-13 represent exploration sampling flight number, R
2, R
3Dual alkalinity, the ternary basicity of representing the raw material ore deposit respectively.
Table 2: oceanic cobalt-rich crust and oceanic multi-metal nodule are joined the pelletizing ratio of components of mining and metallurgy refining
Table 3: oceanic cobalt-rich crust and oceanic multi-metal nodule are joined mining and metallurgy and are refined into stove pelletizing performance perameter table
| Test number | ??MC-01 | ??MMC-01 | ??MMC-02 | ??MMC-03 | ??MMC-04 |
| ??Mn(％) | ??21.9 | ??23.11 | ??22.74 | ??23.82 | ??23.39 |
| ??Fe(％) | ??12.32 | ??11.11 | ??11.11 | ??10.05 | ??10.89 |
| ??CaO(％) | ??3.55 | ??3.21 | ??3.27 | ??2.94 | ??3.18 |
| ??MgO(％) | ??2.47 | ??2.58 | ??2.48 | ??2.62 | ??2.58 |
| ??Al 2O 3(％) | ??4.32 | ??4.17 | ??4.02 | ??4.03 | ??4.03 |
| ??SiO 2(％) | ??12.89 | ??13.36 | ??14.09 | ??14.36 | ??13.39 |
| ??P(％) | ??0.61 | ??0.53 | ??0.61 | ??0.52 | ??0.52 |
| ??Mn+Fe(％) | ??34.22 | ??34.21 | ??33.84 | ??33.87 | ??34.29 |
| ??Mn/Fe | ??1.78 | ??2.08 | ??2.05 | ??2.37 | ??2.15 |
| ??SiO 2+Al 2O 3(％) | ??17.21 | ??17.53 | ??18.12 | ??18.39 | ??17.42 |
| ??SiO 2/Al 2O 3 | ??2.99 | ??3.2 | ??3.5 | ??3.57 | ??3.33 |
| ??CaO/SiO 2 | ??0.28 | ??0.24 | ??0.23 | ??0.2 | ??0.24 |
| ??P/Mn | ??0.028 | ??0.023 | ??0.027 | ??0.022 | ??0.022 |
| Test number | ??MC-01 | ??MMC-01 | ??MMC-02 | ??MMC-03 | ??MMC-04 |
| ??P/Fe | ??0.049 | ??0.048 | ??0.055 | ??0.052 | ??0.048 |
2, pelletizing agglomeration: join that to adopt electric drying oven with forced convection that the mixing raw material ore deposit is dried to water ratio after finish in the ore deposit be 5%～12%, drying temperature is 105 ℃～150 ℃; Carry out ore grinding to 60 order size (ball milling, rod milling all can) after drying is finished, allocate reductive agent coke powder (seeing the above table 2) again into, mix, make ball, again through 105 ℃ of freeze-day with constant temperature to the constant weight the dry bulb group and the corundum crucible of packing into.If the raw material ore deposit this as fine ore (as granularity-25mm ,-5mm productive rate＜5%), also can need not to carry out special pelletizing agglomeration and handle, get final product directly into the stove melting after joining the ore deposit; Those skilled in the art also can adopt other agglomeration modes such as the agglomeration of the group of pressure, sintering for agglumeration according to concrete situation.
3, melting: accurately carry out retailoring in the silicon molybdenum rod furnace of controlled temperature, time at one, every stove uses the 130g of dry bulb group; The temperature of fusion process-time system is: 1000 ℃ of constant temperature reduction 30min, be warming up to 1410 ℃ then, and at the molten 60min that divides of 1410 ℃ of following constant temperature; Melting is finished postcooling and is separated slag iron, weighs respectively and take a sample to carry out chemical analysis, and analytical results sees Table 4, shown in the table 5.
Table 4: the rich manganese slag ingredient and the metal in the dreg rate of recovery of joining the ore deposit melting
Table 5: join metal recovery rate in the alloy composition of ore deposit melting and the alloy
By last table 4,5 as seen, Mn content is 34.06%～36.2% in the rich manganese slag that present embodiment obtains, and respectively joins the ore deposit fusion process and is well on, and slag iron separates good, joins the ore deposit melting and can guarantee that Mn content meets the quality standard of rich manganese slag more than 34% in the rich manganese slag; According to customer requirements,, also can smelt the higher rich manganese slag of Mn content by changing proportioning.In addition, Fe content is 0.26%～0.76% (quality standard requires Fe≤3%) in the rich manganese slag of gained, and P content is 0.0027%～0.016% (quality standard requires P≤0.04%).The rate of recovery of Mn is 92.18%～96.36% in the slag, and the rate of recovery of Cu, Co, Ni is respectively 97.36%～98.43%, 98.55%～99.60%, 98.43%～99.98% in the molten alloy.The ash of reductive agent coke powder (metallurgical coke) is 14.84%, and fugitive constituent is 1.24%, fixed carbon 83.79%.
Present embodiment also proves absolutely, in the development and use process of oceanic cobalt-rich crust and oceanic multi-metal nodule, join mining and metallurgy and refine the high efficiente callback that rich manganese slag not only can be realized metal such as Co, Ni in the alloy, high efficiency extraction and the recovery of Mn have been realized simultaneously, make full use of existing resource, helped alleviating the situation of China's manganese ore chronic shortage.Secondly, make also in the prior art that can not refine Mineral resources such as the oceanic cobalt-rich crust of rich manganese slag and part oceanic multi-metal nodule as single mining and metallurgy further is fully used.
Claims (5)
- An oceanic cobalt-rich crust join the ore deposit melting method, comprise and join ore deposit and melting step that it is characterized in that: the described ore deposit step of joining is with more than one oceanic cobalt-rich crust and more than one oceanic multi-metal nodule are joined the ore deposit at least.
- 2. the ore deposit melting method of joining according to claim 1 is characterized in that: each component satisfies following requirement in the described mixing raw material ore deposit that obtains after joining the ore deposit: the massfraction of Mn is more than 18%; The mass ratio of Mn and two kinds of elements of Fe is 1～3; The massfraction sum of Mn and two kinds of elements of Fe is 32%～50%; SiO 2And Al 2O 3The mass ratio of two kinds of materials is not less than 1.7, and SiO 2And Al 2O 3The massfraction sum of two kinds of materials is below 35%; CaO and SiO 2Mass ratio below 0.3; The massfraction of P is less than 0.65%, and the mass ratio of P and Fe is less than 0.06.
- 3. the ore deposit melting method of joining according to claim 1 and 2 is characterized in that: described join the ore deposit step after, before the melting step, also comprise an agglomeration step; Described agglomeration step comprises sintering for agglumeration, pelletizing agglomeration or the agglomeration of the group of pressure.
- 4. the ore deposit melting method of joining according to claim 1 and 2 is characterized in that: described melting step is to adopt one section melting of blast furnace, or adopts one section melting of electric furnace, perhaps adopts two sections meltings of prereduction equipment-electric furnace; Described prereduction equipment comprises rotary kiln, rotary hearth furnace or shaft furnace.
- 5. the ore deposit melting method of joining according to claim 4, it is characterized in that: in described one section melting or the two sections melting steps, the reductive agent of employing is the incomplete combustion product of metallurgical coke, coal, refinery coke, pitch coke, gas maked coal, cracking Sweet natural gas or liquid fuel.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358919A (en) * | 2011-11-02 | 2012-02-22 | 长沙矿冶研究院有限责任公司 | Method for extracting valuable metal from submarine metallic ore |
| CN103555968A (en) * | 2013-10-23 | 2014-02-05 | 北京矿冶研究总院 | Novel smelting process of cobalt-manganese multi-metal ore |
| CN115725838A (en) * | 2021-08-30 | 2023-03-03 | 深圳市金航深海矿产开发集团有限公司 | Method for extracting valuable metal from ocean polymetallic nodule |
| CN115725865A (en) * | 2021-08-30 | 2023-03-03 | 深圳市金航深海矿产开发集团有限公司 | Method for extracting valuable metal by selectively reducing ocean polymetallic nodule |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3894927A (en) * | 1972-11-27 | 1975-07-15 | Deepsea Ventures Inc | Recovery of metal values from ocean floor nodule ores by halidation in molten salt bath |
| CN1048286C (en) * | 1996-07-25 | 2000-01-12 | 冶金工业部长沙矿冶研究院 | Smelting-rusting-extraction method for extracting valuable metals from ocean polymetallic nodule |
| CN1240860C (en) * | 2004-08-18 | 2006-02-08 | 长沙矿冶研究院 | Pyrogenic enrichment method of valuable metals in ocean cobalt-rich crusts |
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2009
- 2009-11-19 CN CN2009100447777A patent/CN101701297B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358919A (en) * | 2011-11-02 | 2012-02-22 | 长沙矿冶研究院有限责任公司 | Method for extracting valuable metal from submarine metallic ore |
| CN103555968A (en) * | 2013-10-23 | 2014-02-05 | 北京矿冶研究总院 | Novel smelting process of cobalt-manganese multi-metal ore |
| CN103555968B (en) * | 2013-10-23 | 2015-11-25 | 北京矿冶研究总院 | Novel smelting process of cobalt-manganese multi-metal ore |
| CN115725838A (en) * | 2021-08-30 | 2023-03-03 | 深圳市金航深海矿产开发集团有限公司 | Method for extracting valuable metal from ocean polymetallic nodule |
| CN115725865A (en) * | 2021-08-30 | 2023-03-03 | 深圳市金航深海矿产开发集团有限公司 | Method for extracting valuable metal by selectively reducing ocean polymetallic nodule |
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| CN101701297B (en) | 2011-07-20 |
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