CN110813548A - Method for adding lime milk - Google Patents
Method for adding lime milk Download PDFInfo
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- CN110813548A CN110813548A CN201911151922.1A CN201911151922A CN110813548A CN 110813548 A CN110813548 A CN 110813548A CN 201911151922 A CN201911151922 A CN 201911151922A CN 110813548 A CN110813548 A CN 110813548A
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- lime milk
- discharge pipe
- slurry
- slurry discharge
- lime
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/145—Feed mechanisms for reagents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/12—Agent recovery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/24—Multiple arrangement thereof
- B04C5/30—Recirculation constructions in or with cyclones which accomplish a partial recirculation of the medium, e.g. by means of conduits
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to a method for adding lime milk, belonging to a method for adding a beneficiation reagent. The ore feeding pump feeds ore pulp along the tangential direction to rotate, so that particles are deposited, the particles and a certain amount of emulsion are discharged through a bottom slurry discharge valve and a slag discharge valve, the particles move through water power and enter an ore grinding ball mill, alkalinity is continuously released through grinding and is adjusted together with lime milk entering the ball mill, and the pH value of the ore pulp is adjusted through controlling the discharge amount of the lime milk through a valve. On the other hand, the lime milk discharged from the upper section can enter a lime milk distributor and is fed to different adding points, and the slag is removed, so that the adding controllability is enhanced, and the pH value of each operation can be accurately controlled. The invention has the advantages that the lime consumption can be saved; the problems of insufficient lime alkalinity release and inaccurate addition are solved, the lime is distributed according to requirements, the lime slag is ground, the ore grinding ball mill is used, and the effects of energy conservation and consumption reduction are remarkable.
Description
Technical Field
The invention relates to the field of medicament addition in mineral processing, in particular to a method for adding milky lime milk containing a particulate medicament.
Background
The froth flotation is a technology for separating useful minerals from gangue minerals by utilizing the difference of surface physicochemical properties of the minerals, the realization of the technical process is often difficult to realize only by the natural floatability difference of the minerals, the floatability difference must be strengthened by adopting a certain medicament, the separation of the minerals can be realized by increasing the difference, the medicament is called as a regulator, lime and carbide slag are common regulators, when the regulator is used, the regulator is often added into a stirring tank for strong stirring in order to accelerate the action effect, the mixture is made into emulsion and added into each operation, because the substances can not be completely dissolved in water and a large amount of particles exist, pipelines can be blocked in the adding process, and because the content of insoluble substances is large, the dosage needs to be increased due to insufficient alkaline release, unnecessary waste is caused, this has been a significant problem that plagues the use of such agents.
Disclosure of Invention
The invention provides a method for adding lime milk, which aims to solve the problems that when a regulator is used, a pipeline is blocked in the adding process due to the existence of particles, and the dosage needs to be increased due to insufficient alkali release caused by large content of insoluble substances, so that unnecessary waste is caused.
The technical scheme adopted by the invention is as follows: comprises the following steps:
(1) feeding lime water containing slag into a cone of the lime milk splitter through a slurry inlet pipe I by a pump, performing cyclone classification by using the flow velocity of the lime water to enable most undissolved particles to sink to the bottom, discharging the particles from a slag discharge pipe I and a slurry discharge pipe II, conveying the particles into an ore ball mill by hydraulic power, regrinding the particles together with ores, and fully releasing the alkalinity of the particles; the overflow product of the cyclone meets the requirement of the sorting operation on the pH value of the ore pulp through the adjusting action of the adjusting valve II and the adjusting valve I;
(2) the lime milk overflowing from the first slurry discharge pipe is fed into the lime milk distributor through a second slurry inlet pipe at the top of the distributor through a pipeline; the distributor is divided into a plurality of layers of grid boxes, a second partition plate and a first partition plate of each layer of grid box are arranged from high to low, the lime milk amount flowing out of a third slurry discharge pipe, a fourth slurry discharge pipe and a fifth slurry discharge pipe is controlled through a third regulating valve, a fourth regulating valve and a fifth regulating valve, the pH value requirement of each operation is met, and the residual lime milk overflows through the second slurry discharge pipe and flows back to a lime milk preparation stirring tank for reuse.
The ore pulp generated by the ore ball mill is pumped into a hydrocyclone, overflows into a sorting operation, and is conveyed into the ore ball mill by water power to participate in regrinding after settled sand is discharged.
The number of the grids of the distributor can be increased or decreased according to the needs, and the requirement for adding more lime milk is met.
The distributor adopts a 3-layer grid box.
The lime milk splitter of the invention comprises: the slurry inlet pipe I and the slurry outlet pipe I are respectively communicated with the side face of the upper part of the cone, the slurry outlet pipe II and the slag outlet pipe I are respectively communicated with the bottom of the cone, and the regulating valve II and the regulating valve I are respectively connected with the slurry outlet pipe II and the slag outlet pipe I.
The lime milk dispenser of the present invention comprises:
the slurry inlet pipe II, the slurry discharge pipe III, the regulating valve IV, the slurry discharge pipe V, the partition plate I, the partition plate II, the slurry discharge pipe V and the regulating valve V are respectively communicated with the side face of the uncovered box body, the regulating valve III, the regulating valve IV, the slurry discharge pipe IV and the slurry discharge pipe V are respectively connected with the slurry discharge pipe III, the slurry discharge pipe IV and the slurry discharge pipe V, the slurry discharge pipe V is communicated with the bottom of the uncovered box body, the partition plate II and the partition plate I are arranged from high to low, and the length of the partition plate II is larger than that of the partition plate I.
The invention has the advantages that: the lime milk adding device has the characteristics of small power consumption, strong buffering capacity, large operable space and good adjustability, and simultaneously has good slag removal performance, the separated slag does not need to be separately treated, coarse particles in the lime milk can be finely ground by means of an ore grinding ball mill of a selection factory, the utilization rate of the lime can be obviously improved, the alkalinity of the slag is fully released, the using amount of the lime milk is saved, the other part of the lime milk after being removed from the slag enters a lime milk distributing system, and the particulate matter is basically removed and is easy to control the using amount, so that the pipeline blockage can be reduced, and the stability and the adjustability of lime milk addition are improved. In addition, the lime milk which is not used completely can be returned to the preparation device for reuse.
Drawings
FIG. 1 is a schematic diagram of the operation of the lime milk addition process of the present invention;
FIG. 2 is a schematic view of the construction of the flow diverter of the present invention;
FIG. 3 is a schematic view of the dispenser of the present invention;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a flow chart of a beneficiation process in a selected plant of Anhui province, China;
FIG. 6 is a plot of a method for adding raw carbide slag milk from a selected plant in Anhui province, in accordance with the present invention;
FIG. 7 is an illustration of a segregator distributor for a concentrating mill in accordance with an embodiment of the invention;
FIG. 8 is a schematic diagram of the point and method for adding the carbide slag milk in a selected site of Anhui province, China.
Detailed Description
Comprises the following steps:
(1) feeding lime water containing slag into a cone 2 of the lime milk splitter through a slurry inlet pipe I1 by a pump tangentially, performing cyclone classification by using the flow velocity of the lime water to enable most undissolved particles to sink to the bottom, discharging the particles from a slag discharge pipe I6 and a slurry discharge pipe II 4, conveying the particles into an ore ball mill by hydraulic power, regrinding the particles together with ore, and fully releasing the alkalinity of the particles; the overflow product of the cyclone meets the requirement of the sorting operation on the pH value of the ore pulp through the adjusting action of the adjusting valve II 5 and the adjusting valve I7;
(2) the lime milk overflowing from the first slurry discharge pipe 3 is fed into the lime milk distributor through a pipeline from a second slurry inlet pipe 8 at the top of the distributor; the distributor is divided into a plurality of layers of grid boxes, a second partition plate 16 and a first partition plate 15 of each layer of grid box are arranged from high to low, the lime milk amount flowing out of a third slurry discharge pipe 11, a fourth slurry discharge pipe 13 and a fifth slurry discharge pipe 17 is controlled through a third regulating valve 10, a fourth regulating valve 12 and a fifth regulating valve 18, the pH value requirement of each operation is met, and the residual lime milk overflows through a second slurry discharge pipe 14 and flows back to a lime milk preparation stirring tank for reuse.
The ore pulp generated by the ore ball mill is pumped into a hydrocyclone, overflows into a sorting operation, and is conveyed into the ore ball mill by water power to participate in regrinding after settled sand is discharged.
The number of the grids of the distributor can be increased or decreased according to the needs, and the requirement of adding more lime milk is met.
The lime milk splitter of the invention comprises: the slurry inlet pipe I1, the cone 2, the slurry discharge pipe I3, the slurry discharge pipe II 4, the regulating valve II 5, the slag discharge pipe I6 and the regulating valve I7, wherein the slurry inlet pipe I1 and the slurry discharge pipe I3 are respectively communicated with the side face of the upper part of the cone 2, the slurry discharge pipe II 4 and the slag discharge pipe I6 are respectively communicated with the bottom of the cone 2, and the regulating valve II 5 and the regulating valve I7 are respectively connected with the slurry discharge pipe II 4 and the slag discharge pipe I6.
The lime milk dispenser of the present invention comprises:
the slurry inlet pipe II 8, the uncovered box body 9, the regulating valve III 10, the slurry discharge pipe III 11, the regulating valve IV 12, the slurry discharge pipe IV 13, the slurry discharge pipe V14, the partition plate I15, the partition plate II 16, the slurry discharge pipe V17 and the regulating valve V18 are respectively communicated with the side face of the uncovered box body 9, the regulating valve III 10, the regulating valve IV 12 and the regulating valve V18 are respectively connected with the slurry discharge pipe III 11, the slurry discharge pipe IV 13 and the slurry discharge pipe V17, the slurry discharge pipe V14 is communicated with the bottom of the uncovered box body 9, the partition plate II 16 and the partition plate I15 are arranged from high to low, and the length of the partition plate II 16 is greater than that of the partition plate I15.
The invention is further illustrated below by way of example.
The Anhui gold ore is a copper gold concentrating plant for processing 1500t/d per day, the adopted process is a gold and copper mixed flotation-gold and copper and sulfur separation process, and the concentrating process flow is shown in figure 5. The pH value of the mixed flotation pulp is 8.5, and the pH value of the separated flotation pulp is 12.5. The ore pulp pH value regulator adopts carbide slag, and the slag content is high. The original adding method is that the carbide slag is directly added into each medicine point (namely a stirring tank before mixed roughing, a stirring tank before separation and flotation, separation and concentration 2 and separation and scavenging 1) after being stirred and emulsified, as shown in figure 6. Because a large amount of particles exist in the carbide slag milk, the carbide slag dosage is difficult to control, in addition, the particles are more, the alkalinity is not sufficiently released, and the carbide slag dosage is up to 3.85kg/t, the split-flow distribution system is adopted for adding the medicament later, the effect is remarkable, the carbide slag dosage is saved by 1.56kg/t, and the annual carbide slag cost is saved by more than 50 ten thousand yuan.
The specific implementation method comprises the following steps: as shown in figure 7, the diverter is arranged on a cyclone grading platform for ore grinding and grading operation, carbide slag emulsion is fed into a cone 2 through a pump tangent line after being prepared, rotational flow grading is carried out by utilizing the flow velocity of lime water, most undissolved particles are sunk to the bottom, the carbide slag emulsion containing the particles and discharged by a slag discharge pipe (6) and a slurry discharge pipe (4) enter an ore grinding ball mill together with the cyclone sand setting, the particles are ground and enter a hydrocyclone for grading together with ore pulp after being ground, overflow products enter mixed floating roughing operation, and the pH value of the overflow of the hydrocyclone can be about 8.5 through the adjustment of diverter adjusting valves (5) and (7). The requirement of mixed roughing pH value is met, and after the carbide slag is ground, the consumption of the carbide slag is saved due to sufficient alkaline release. On the other hand, the slag-free carbide slag emulsion discharged from the slurry discharge pipe (3) is fed into a distributor through a pipeline (8), enters separation and concentration two operations from a slurry discharge port (17) on the side surface of the box body, and controls the flow through the adjustment action of a valve (17), so that the pH value of the ore pulp of the separation and concentration two is controlled to be about 12.5; the residual lime-separated water flows into a second grid of the distributor along the overflow from the grid plate (16), flows into a copper-sulfur separation alkali pretreatment stirring tank from a slurry discharge port (11) of the second grid, plays a role in copper-sulfur separation, pre-slurry mixing and sulfur inhibition, and ensures that the pH value is about 12.5 through the adjustment of an adjusting valve (10); the residual lime water continuously flows into the No. 3 grid of the distributor along the overflow from the grid plate (16), flows into the copper-sulfur separation scavenging 1 operation from the pulp discharge port (13) of the No. 3 grid, supplements the pH value of the copper-sulfur separation scavenging, keeps the ore pulp at about 12.5 through the adjustment of the adjusting valve (12), and returns a small part of the residual lime water to the carbide slag emulsion preparation position through the pulp discharge pipe (14). When a certain selected factory in Anhui adopts the carbide slag milk adding mode, the medicament is added to the place, as shown in figure 8.
Claims (6)
1. The lime milk adding method is characterized by comprising the following steps:
(1) feeding lime water containing slag into a cone of the lime milk splitter through a slurry inlet pipe I by a pump, performing cyclone classification by using the flow velocity of the lime water to enable most undissolved particles to sink to the bottom, discharging the particles from a slag discharge pipe I and a slurry discharge pipe II, conveying the particles into an ore ball mill by hydraulic power, regrinding the particles together with ores, and fully releasing the alkalinity of the particles; the overflow product of the cyclone meets the requirement of the sorting operation on the pH value of the ore pulp through the adjusting action of the adjusting valve II and the adjusting valve I;
(2) the lime milk overflowing from the first slurry discharge pipe is fed into the lime milk distributor through a second slurry inlet pipe at the top of the distributor through a pipeline; the distributor is divided into a plurality of layers of grid boxes, a second partition plate and a first partition plate of each layer of grid box are arranged from high to low, the lime milk amount flowing out of a third slurry discharge pipe, a fourth slurry discharge pipe and a fifth slurry discharge pipe is controlled through a third regulating valve, a fourth regulating valve and a fifth regulating valve, the pH value requirement of each operation is met, and the residual lime milk overflows through the second slurry discharge pipe and flows back to a lime milk preparation stirring tank for reuse.
2. The method for adding lime milk according to claim 1, characterized in that: and pumping the ore pulp generated by the ore ball mill into a hydrocyclone, overflowing the ore pulp into a sorting operation, discharging settled sand, and conveying the discharged settled sand into the ore ball mill by water power to participate in regrinding.
3. The method for adding lime milk according to claim 1, characterized in that: the number of the grids of the distributor can be increased or decreased according to the needs, and the requirement of adding more lime milk is met.
4. The method for adding lime milk according to claim 3, characterized in that: the distributor adopts a 3-layer grid box.
5. The method for adding lime milk according to claim 4, wherein: the lime milk splitter comprises: the slurry inlet pipe I and the slurry outlet pipe I are respectively communicated with the side face of the upper part of the cone, the slurry outlet pipe II and the slag outlet pipe I are respectively communicated with the bottom of the cone, and the regulating valve II and the regulating valve I are respectively connected with the slurry outlet pipe II and the slag outlet pipe I.
6. The method for adding lime milk according to claim 4, wherein: the lime milk dispenser comprises: the slurry inlet pipe II, the slurry discharge pipe III, the regulating valve IV, the slurry discharge pipe V, the partition plate I, the partition plate II, the slurry discharge pipe V and the regulating valve V are respectively communicated with the side face of the uncovered box body, the regulating valve III, the regulating valve IV, the slurry discharge pipe IV and the slurry discharge pipe V are respectively connected with the slurry discharge pipe III, the slurry discharge pipe IV and the slurry discharge pipe V, the slurry discharge pipe V is communicated with the bottom of the uncovered box body, the partition plate II and the partition plate I are arranged from high to low, and the length of the partition plate II is larger than that of the partition plate I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911151922.1A CN110813548B (en) | 2019-11-22 | 2019-11-22 | Method for adding lime milk |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911151922.1A CN110813548B (en) | 2019-11-22 | 2019-11-22 | Method for adding lime milk |
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| CN110813548A true CN110813548A (en) | 2020-02-21 |
| CN110813548B CN110813548B (en) | 2021-05-07 |
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| CN202061663U (en) * | 2011-03-24 | 2011-12-07 | 济南重工股份有限公司 | Limestone slurry distribution device |
| CN205933636U (en) * | 2016-08-25 | 2017-02-08 | 湘潭大学兴湘学院 | Automatic fossil ash breast configuration device |
| CN206296047U (en) * | 2016-12-09 | 2017-07-04 | 北京国电龙源环保工程有限公司 | A kind of lime stone refining system |
| US20180208854A1 (en) * | 2017-01-23 | 2018-07-26 | SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project as such owners exist now and | Nanobubble aided bitumen extraction from oil sand |
| CN109382215A (en) * | 2018-09-29 | 2019-02-26 | 四川西冶检测科技有限公司 | Automatic addition milk of lime system |
| CN208839794U (en) * | 2018-09-19 | 2019-05-10 | 甘肃金徽矿业有限责任公司 | A kind of true adding set of lime for concentrating mill milk extract |
-
2019
- 2019-11-22 CN CN201911151922.1A patent/CN110813548B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2007114009A (en) * | 2007-04-04 | 2008-10-10 | Совместное предпри тие в форме закрытого акционерного общества "Изготовление, внедрение, сервис" (RU) | METHOD FOR FLOTATION ENRICHMENT OF CURRENT Sludges Obtained When Washing Sulfide Polymetallic Or Copper-Zinc Ores |
| CN101780428A (en) * | 2009-01-20 | 2010-07-21 | 江西铜业集团公司 | Method for adding lime for concentrating mill |
| CN201427073Y (en) * | 2009-04-15 | 2010-03-24 | 济南重工股份有限公司 | Three-box slurry distribution box |
| CN202061663U (en) * | 2011-03-24 | 2011-12-07 | 济南重工股份有限公司 | Limestone slurry distribution device |
| CN205933636U (en) * | 2016-08-25 | 2017-02-08 | 湘潭大学兴湘学院 | Automatic fossil ash breast configuration device |
| CN206296047U (en) * | 2016-12-09 | 2017-07-04 | 北京国电龙源环保工程有限公司 | A kind of lime stone refining system |
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| CN208839794U (en) * | 2018-09-19 | 2019-05-10 | 甘肃金徽矿业有限责任公司 | A kind of true adding set of lime for concentrating mill milk extract |
| CN109382215A (en) * | 2018-09-29 | 2019-02-26 | 四川西冶检测科技有限公司 | Automatic addition milk of lime system |
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| CN110813548B (en) | 2021-05-07 |
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