CN114959286B - Preparation method of composite additive for reducing melting point and viscosity of material - Google Patents
Preparation method of composite additive for reducing melting point and viscosity of material Download PDFInfo
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- CN114959286B CN114959286B CN202210598099.4A CN202210598099A CN114959286B CN 114959286 B CN114959286 B CN 114959286B CN 202210598099 A CN202210598099 A CN 202210598099A CN 114959286 B CN114959286 B CN 114959286B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/02—Obtaining noble metals by dry processes
- C22B11/021—Recovery of noble metals from waste materials
- C22B11/023—Recovery of noble metals from waste materials from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/003—Bath smelting or converting
- C22B15/0045—Bath smelting or converting in muffles, crucibles, or closed vessels
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0054—Slag, slime, speiss, or dross treating
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
- C22B23/025—Obtaining nickel or cobalt by dry processes with formation of a matte or by matte refining or converting into nickel or cobalt, e.g. by the Oxford process
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/06—Refining
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a preparation method of a composite additive for reducing the melting point and viscosity of materials, which comprises the following steps: drying and dehydrating the composite additive raw materials until the water content is 1-3%, uniformly stirring, adding a binder, and putting the mixture into a ball press machine to prepare pellets; the composite additive comprises, by weight, 5.10-52.25 parts of sodium phosphate, 6.05-19.05 parts of sodium carbonate, 25.80-70.52 parts of sodium borate and 6.53-15.90 parts of lime powder. The invention has the advantages of small investment, shortened smelting time, economy, environmental protection, capability of solving the problems of valuable metals, energy consumption loss and the like, and plays a role in comprehensively recycling resources and developing recycling economy.
Description
Technical Field
The invention relates to the technical field of smelting of modification research of nonferrous refractory materials, in particular to a preparation method of a composite additive for reducing the melting point and viscosity of materials.
Background
In recent years, the nickel concentrate, the copper concentrate and the noble metal concentrate with better quality are less and less in quantity under the economic influence of the global nonferrous metal market, and substances with high melting point such as magnesium oxide, quartz and the like and impurities such as lead, arsenic and the like are higher and higher in content, so that the process of the materials is not easy to control in the smelting process, the melting point and viscosity of slag are increased, the content of valuable metals in the slag is higher due to poor slag fluidity, the recovery rate of the valuable metals is reduced, the smelting energy consumption is increased, and the production cost is increased.
In order to reduce the production cost to the maximum extent, improve the recovery rate of valuable metals, reduce the smelting temperature, improve the fluidity and comprehensively recover the valuable metals in the slag, the problem to be solved by nonferrous smelting production enterprises is urgent.
Disclosure of Invention
The invention aims to provide a preparation method of a composite additive which has small investment and can reduce smelting time and lower melting point and viscosity of materials.
In order to solve the problems, the preparation method of the composite additive for reducing the melting point and the viscosity of materials is characterized by comprising the following steps of: drying and dehydrating the composite additive raw materials until the water content is 1-3%, uniformly stirring, adding a binder, and putting the mixture into a ball press machine to prepare pellets; the composite additive comprises, by weight, 5.10-52.25 parts of sodium phosphate, 6.05-19.05 parts of sodium carbonate, 25.80-70.52 parts of sodium borate and 6.53-15.90 parts of lime powder.
The drying and dehydrating conditions are that the temperature is 100-105 ℃.
The addition amount of the binder is 0.1-0.2% of the weight of the composite additive raw material.
Compared with the prior art, the invention has the following advantages:
1. sodium phosphate, sodium carbonate and sodium borate are decomposed into sodium oxide and boron oxide at high temperature, and a plurality of alkaline metal oxides can be dissolved in the sodium phosphate, sodium carbonate and sodium borate, and can be mixed with CaO, mgO and SiO 2 The high-melting point substances are combined to generate low-melting point substances, so that the melting point of the materials is reduced as a whole, the fluidity is improved, and the energy is saved and the consumption is reduced. Meanwhile, the sodium carbonate can volatilize to generate gas when meeting high temperature, so that the metal liquid can be stirred, sulfur and phosphorus can be removed when being matched with metallurgical calcium oxide, the separation of a melt and slag is better improved, the sedimentation and separation of valuable metals in the slag are promoted, and the smelting time is shortened.
2. The invention has the advantages of small investment, economy and environmental protection, can solve the problems of valuable metals, energy consumption loss and the like, and plays roles of comprehensively recycling resources and developing recycling economy.
Detailed Description
A preparation method of a composite additive for reducing the melting point and viscosity of materials comprises the following steps:
drying and dehydrating the composite additive raw material at 100-105 ℃ until the water content is 1-3%, and uniformly stirring by using a stirrer; then adding a binder, wherein the addition amount of the binder is 0.1-0.2% of the weight of the composite additive raw material. Putting into a ball pressing machine to prepare pellets.
Wherein: the composite additive raw materials comprise, by weight, 5.10-52.25 parts of sodium phosphate, 6.05-19.05 parts of sodium carbonate, 25.80-70.52 parts of sodium borate and 6.53-15.90 parts of lime powder.
Example 1 a method for preparing a composite additive to reduce the melting point and viscosity of materials: 522.5g of sodium phosphate, 60.5g of sodium carbonate, 258.0g of sodium borate and 159.0g of lime powder are dried and dehydrated at 100-105 ℃ until the water content is 1%, and then uniformly stirred by a stirrer; then adding 1g of binder, and putting into a ball press machine to prepare the pellets.
Weighing 300g of dried slag, and weighing the obtained composite additive according to 3% of the slag amount; all materials are weighed, mixed and added into a clay crucible, and the protection of a graphite crucible is added, the technical conditions are that the smelting temperature is 1350 ℃, the heat preservation time is 30min, and the materials are taken out and naturally cooled after the heat preservation is finished. The produced materials were subjected to slag-matte separation, and smelting slag was subjected to melting point and viscosity tests, and the results are shown in table 1.
Table 1 example 1 test results
Example 2 a method for preparing a composite additive to reduce the melting point and viscosity of materials: drying and dehydrating 289.0g of sodium phosphate, 110.5g of sodium carbonate, 495.2g of sodium borate and 105.3g of lime powder at 100-105 ℃ until the water content is 2%, and uniformly stirring by a stirrer; then adding 1.5g of binder, and putting into a ball press machine to prepare pellets.
Firstly, weighing 300g of dried slag, and weighing a composite additive according to 3% of the slag amount; all materials are weighed, mixed and added into a clay crucible, and the protection of a graphite crucible is added, the technical conditions are that the smelting temperature is 1300 ℃, the heat preservation time is 30min, and the materials are taken out and naturally cooled after the heat preservation is finished. The produced materials were subjected to slag-matte separation, and smelting slag was subjected to melting point and viscosity tests, and the results are shown in table 2.
Table 2 example 2 test results
Example 3 a method for preparing a composite additive to reduce the melting point and viscosity of materials: drying and dehydrating 51.0g of sodium phosphate, 190.5g of sodium carbonate, 705.2g of sodium borate and 53.3g of lime powder at 100-105 ℃ until the water content is 3%, and uniformly stirring by a stirrer; then adding 2g of binder, and putting into a ball press machine to prepare pellets.
Firstly, weighing 300g of dried slag, and weighing a composite additive according to 3% of the slag amount; all materials are weighed, mixed and added into a clay crucible, and the protection of a graphite crucible is added, wherein the technical conditions are that the smelting temperature is 1250 ℃, the heat preservation time is 30min, and the materials are taken out and naturally cooled after the heat preservation is finished. The produced materials were subjected to slag-matte separation, and smelting slag was subjected to melting point and viscosity tests, and the results are shown in table 3.
TABLE 3 example 3 detection results
According to the analysis of the detection results of the embodiments 1-3, the smelting temperature and the melting time of the slag after the composite additive is added are reduced, the melting point and the viscosity of the slag are lower than those of the raw slag, the melting time is shortened by 5-11 minutes, and the fact that the composite additives with different proportions can effectively reduce the melting point and the viscosity of materials, improve the fluidity, save energy and reduce consumption is shown.
Claims (3)
1. A preparation method of a composite additive for reducing the melting point and viscosity of materials is characterized by comprising the following steps: drying and dehydrating the composite additive raw materials until the water content is 1-3%, uniformly stirring, adding a binder, and putting the mixture into a ball press machine to prepare pellets; the composite additive comprises, by weight, 5.10-52.25 parts of sodium phosphate, 6.05-19.05 parts of sodium carbonate, 25.80-70.52 parts of sodium borate and 6.53-15.90 parts of lime powder.
2. The method for preparing the composite additive for reducing the melting point and the viscosity of materials according to claim 1, wherein the method comprises the following steps: the drying and dehydrating conditions are that the temperature is 100-105 ℃.
3. The method for preparing the composite additive for reducing the melting point and the viscosity of materials according to claim 1, wherein the method comprises the following steps: the addition amount of the binder is 0.1-0.2% of the weight of the composite additive raw material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210598099.4A CN114959286B (en) | 2022-05-30 | 2022-05-30 | Preparation method of composite additive for reducing melting point and viscosity of material |
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| CN202210598099.4A CN114959286B (en) | 2022-05-30 | 2022-05-30 | Preparation method of composite additive for reducing melting point and viscosity of material |
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| Publication Number | Publication Date |
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| CN114959286A CN114959286A (en) | 2022-08-30 |
| CN114959286B true CN114959286B (en) | 2023-05-12 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102154531A (en) * | 2011-03-25 | 2011-08-17 | 喀左县钒钛资源综合开发利用工程技术研究中心 | Method for producing artificial rutile from titanium-containing blast furnace slags |
| CN103602825A (en) * | 2013-11-19 | 2014-02-26 | 郴州市金贵银业股份有限公司 | Fluxing agent in precious metal pyrometallurgy |
| EP2801557A1 (en) * | 2013-05-11 | 2014-11-12 | HeidelbergCement AG | Method for producing a magnesium silicate belite calcium aluminate cement |
| KR20190005108A (en) * | 2017-07-05 | 2019-01-15 | 상명이엔텍 주식회사 | Additive to reduce the amount of fine dist and increase the collection efficiency of dust collector |
| CN112575177A (en) * | 2020-11-24 | 2021-03-30 | 金川集团股份有限公司 | Method for reducing melting point and viscosity of colored refractory material |
-
2022
- 2022-05-30 CN CN202210598099.4A patent/CN114959286B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102154531A (en) * | 2011-03-25 | 2011-08-17 | 喀左县钒钛资源综合开发利用工程技术研究中心 | Method for producing artificial rutile from titanium-containing blast furnace slags |
| EP2801557A1 (en) * | 2013-05-11 | 2014-11-12 | HeidelbergCement AG | Method for producing a magnesium silicate belite calcium aluminate cement |
| CN103602825A (en) * | 2013-11-19 | 2014-02-26 | 郴州市金贵银业股份有限公司 | Fluxing agent in precious metal pyrometallurgy |
| KR20190005108A (en) * | 2017-07-05 | 2019-01-15 | 상명이엔텍 주식회사 | Additive to reduce the amount of fine dist and increase the collection efficiency of dust collector |
| CN112575177A (en) * | 2020-11-24 | 2021-03-30 | 金川集团股份有限公司 | Method for reducing melting point and viscosity of colored refractory material |
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