CN114849901A - Method for improving lead-zinc separation efficiency through middling external circulation - Google Patents
Method for improving lead-zinc separation efficiency through middling external circulation Download PDFInfo
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- CN114849901A CN114849901A CN202210418892.1A CN202210418892A CN114849901A CN 114849901 A CN114849901 A CN 114849901A CN 202210418892 A CN202210418892 A CN 202210418892A CN 114849901 A CN114849901 A CN 114849901A
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
- B03B1/04—Conditioning for facilitating separation by altering physical properties of the matter to be treated by additives
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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Abstract
A method for improving lead-zinc separation efficiency by middling external circulation comprises the following steps: the method comprises the following steps of (1) dehydrating sulphide ore floating foam obtained by carrying out floating mixing on tin-lead-zinc polymetallic ores by a thickener, grinding underflow floating sulphide ore pulp of the thickener, separating lead and zinc by adopting a primary-coarse-tertiary-fine-secondary-sweeping process and adding sodium humate, zinc sulfate, sodium sulfite and ethion nitrogen to obtain qualified lead concentrate, returning middlings of a concentration I and a concentration II to lead-zinc grinding for surface scrubbing and reagent removal, further grinding to improve the dissociation degree of a intergrowth, and returning to a flotation process; the lead-zinc separation tailings are added with lime, sodium humate, copper sulfate and butyl xanthate to separate zinc and sulfur, and qualified zinc concentrate is obtained. The method can effectively solve the problems of high mutual content and low recovery rate of lead-zinc concentrate in the lead-zinc separation process.
Description
Technical Field
The invention relates to the technical field of mineral separation, in particular to a method for improving lead and zinc separation efficiency through middling external circulation.
Background
Tin-lead-zinc polymetallic ore has large grindability difference with sulphide ore, tin is easy to be crushed excessively to cause metal loss, and coarse granularity is mostly adopted in production to enter flotation, so that high-concentration and large-dosage flotation is caused, lead-zinc separation flotation difficulty is larger, lead-zinc concentrate contains higher concentration, lead-zinc metal recovery rate is reduced, and lead-zinc concentrate quality is influenced.
Disclosure of Invention
Aiming at the problems and the defects in the prior art, the invention provides a method for improving the lead-zinc separation efficiency by middling external circulation, which is characterized in that the middling of concentration I and concentration II is returned to lead-zinc grinding ore for surface scrubbing and chemical removal on the basis of the lead-zinc mixed flotation foam grinding separation process, the dissociation degree of the intergrowth is further improved by grinding, and then the middling is returned to the flotation process, so that the content of lead-zinc concentrate is reduced, and the lead-zinc separation recovery rate is improved.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: a method for improving lead-zinc separation efficiency by middling external circulation comprises the following specific steps:
(1) grinding ore to prevent over-powdering of cassiterite, mixed flotation of sulphide ore adopts coarse flotation, lead-zinc ore is not completely dissociated, obtained lead-zinc mixed flotation concentrate is concentrated by a thickener, underflow is fed into a grinding mill for regrinding, lime powder is added into the grinding mill to adjust the pH value, and iron sulphide ore is inhibited.
(2) Lead-zinc separation
The lead and zinc are separated by adding sodium humate, zinc sulfate, sodium sulfite and ethyl sulfur nitrogen, the mass concentration of the ethyl sulfur nitrogen is 1-2%, and middlings of a concentration I and a concentration II in the lead and zinc separation process do not return to lead and zinc separation roughing operation, but return to grinding for external circulation.
(3) Zinc sulphur separation
And separating zinc and sulfur by adding lime, sodium humate, copper sulfate and butyl xanthate to obtain qualified zinc concentrate, and feeding tailings into a tailing pond.
The concentration of ore grinding in the step (1) is 60-65%, the lime powder is added into the ore grinding machine in an amount of 400-1000 g/t, and the qualified grade of ore grinding is-200 meshes (-0.074mm) and accounts for 88%.
And (3) returning middlings of the concentration I and the concentration II in the lead-zinc separation in the step (2) to the sulphide ore mill for closed circuit grinding. Adding sodium humate, zinc sulfate and sodium sulfite into the lead-zinc separation flotation to serve as a lead-zinc-sulfur flotation inhibitor, wherein the mass concentration of sodium humate is 1-2%, the mass concentration of zinc sulfate is 2-5%, the mass concentration of sodium sulfite is 2-5%, and the addition amounts of sodium humate, zinc sulfate and sodium sulfite are respectively 60-100 g/t, 480-500 g/t and 480-500 g/t; adding ethyl sulfur nitrogen as a lead-zinc separation flotation collector, wherein the mass concentration of the ethyl sulfur nitrogen is 1-2%, and the using amount of the ethyl sulfur nitrogen is 40-50 g/t.
Adding sodium humate and lime into the zinc-sulfur separation flotation in the step (3) to serve as a zinc-sulfur flotation inhibitor, wherein the mass concentration of the lime is 10-20%, the mass concentration of the sodium humate is 1-2%, and the addition amounts of the sodium humate and the sodium humate are 200-240 g/t and 10-20 kg/t respectively; copper sulfate and butyl xanthate are added to serve as an activating agent and a collecting agent for zinc-sulfur separation flotation, the mass concentration of the copper sulfate is 1-2%, the mass concentration of the butyl xanthate is 1-2%, and the dosage of the butyl xanthate is 50-70 g/t and 20-40 g/t respectively.
Except for other descriptions, the percentages are mass percentages, and the sum of the content percentages of all the components is 100%.
The invention has the beneficial effects that:
(1) the problem that part of lead-zinc minerals are fine in embedded granularity can be solved by concentrating middlings and regrinding, so that part of lead-zinc intergrowths which are difficult to concentrate are further fully dissociated, and the comprehensive dissociation degree of lead and zinc is improved;
(2) the residual agent on the surface of the mineral is washed for the second time, so that the zinc activated by the copper sulfate is more easily inhibited;
(3) compared with the traditional flow process, the recovery rate and the concentrate grade are higher, and the consumption of flotation reagents is reduced;
(4) the production operation stability is better.
Drawings
FIG. 1 is a flow chart of the original lead and zinc separation and recovery process of a concentrating mill.
FIG. 2 is a process flow diagram of the method for improving the lead-zinc separation efficiency by the middling external circulation.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the drawings and examples, which are only for the purpose of clearly illustrating the present invention and are not to be construed as limiting the present invention.
Example 1
This example is an example of the method for improving the lead-zinc separation efficiency by external circulation of middling, the raw mineral material is lean fine lead-zinc ore, and the raw mineral contains sn0.26%, pb0.19%, sb0.12%, zn1.37%, S5.47%, fe5.09%, SiO 5.09% 2 44.88％，CaO 2 13.21%, comprising the following steps:
(1) collecting the fully-floated sulphide ore in the production site into a thickener for concentration and precipitation, recycling the overflow of the thickener as production water, enabling the underflow concentration of the thickener to be 60 percent, enabling the underflow concentration of the thickener to enter a sulphide ore mill and a spiral classifier to form closed circuit grinding, and adding 400g/t of lime into an ore mill for feeding.
(2) Returning sand returned by the spiral classifier to an ore mill, overflowing the spiral classifier to enter a lead-zinc separation flotation machine, adding sodium humate, zinc sulfate and sodium sulfite as lead-zinc-sulfur flotation inhibitors in the lead-zinc separation flotation, wherein the addition amounts of the sodium humate, the zinc sulfate and the sodium sulfite are respectively 98g/t feeding, 550g/t feeding and 550g/t feeding, and the middlings of the concentration I and the concentration II in the lead-zinc separation are returned to a sulfide mill for closed circuit grinding;
(3) adding ethidium, sulfur and nitrogen as a lead-zinc-sulfur separation flotation collector, wherein the usage amount of the ethidium, sulfur and nitrogen is 280g/t per ore feeding; sodium humate and lime are added in the zinc-sulfur separation flotation to serve as zinc-sulfur flotation inhibitors, and the addition amounts are 240g/t ore feeding and 10kg/t ore feeding respectively; copper sulfate and butyl xanthate are added as an activating agent and a collecting agent for zinc-sulfur separation flotation, and the dosage is 70g/t ore feeding and 20g/t ore feeding respectively.
By the process, 22.69% of lead in lead concentrate, 4.44% of zinc in lead concentrate, 61.07% of lead recovery rate, 50.65% of zinc in zinc concentrate, 0.13% of lead and 79.35% of zinc recovery rate are obtained.
Example 2
This example is another example of the method for improving the separation efficiency of lead and zinc by external circulation of middlings, and the mineral raw material is medium-grade sn-pb-zn ore, and the raw ore contains sn0.33%, pb0.31%, sb0.26%, zn2.87%, S5.59%, fe7.10%, SiO 2.87%, c 5.59%, fe 5.10%, and fe 2.10% 2 43.86％,CaO 2 10.46%, comprising the following steps:
(1) collecting the fully-floated sulphide ore in the production site into a thickener for concentration and precipitation, recycling the overflow of the thickener as production water, enabling the underflow concentration of the thickener to be 60 percent, enabling the underflow concentration of the thickener to enter a sulphide ore mill and a spiral classifier to form closed circuit grinding, and adding 450g/t of lime into an ore mill for feeding.
(2) Returning sand returned by the spiral classifier to an ore mill, overflowing the spiral classifier to enter a lead-zinc separation flotation machine, adding sodium humate, zinc sulfate and sodium sulfite into the lead-zinc separation flotation machine to serve as lead-zinc-sulfur flotation inhibitors, wherein the addition amounts of the sodium humate, the zinc sulfate and the sodium sulfite are respectively 100g/t feeding, 600g/t feeding and 600g/t feeding, and the middlings of the concentration I and the concentration II in the lead-zinc separation process are returned to a sulfide mill for closed circuit grinding;
(3) adding ethidium, sulfur and nitrogen as a lead-zinc-sulfur separation flotation collector, wherein the usage amount of the ethidium, sulfur and nitrogen is 280g/t per ore feeding; sodium humate and lime are added in the zinc-sulfur separation flotation to serve as zinc-sulfur flotation inhibitors, and the addition amounts are 240g/t ore feeding and 10.85kg/t ore feeding respectively; copper sulfate and butyl xanthate are added as an activating agent and a collecting agent for zinc-sulfur separation flotation, and the dosage is 70g/t ore feeding and 20g/t ore feeding respectively.
By the process, the lead concentrate contains 23.55% of lead, 4.12% of zinc, 65.07% of lead recovery rate, 49.35% of zinc, 0.14% of lead and 82.35% of zinc recovery rate are obtained.
Example 3
This example is another example of the method for improving the separation efficiency of lead and zinc by external circulation of middlings, in which the mineral raw material is a high-grade sn-pb-zn ore, and the raw ore contains sn1.06%, pb2.45%, sb2.23%, zn10.77%, and S29.03%, and includes the following steps:
(1) collecting the production site full-floating sulfide ore into a thickener for concentration and precipitation, recycling the overflow of the thickener as production water, feeding the underflow of the thickener into a sulfide ore mill and a spiral classifier to form closed circuit ore milling, and adding 1000g/t lime into an ore mill for ore feeding;
(2) returning sand returned by the spiral classifier to an ore mill, overflowing the spiral classifier to enter a lead-zinc separation flotation machine, adding sodium humate, zinc sulfate and sodium sulfite into the lead-zinc separation flotation machine to serve as lead-zinc-sulfur flotation inhibitors, wherein the addition amounts of the sodium humate, the zinc sulfate and the sodium sulfite are respectively 150g/t feeding, 1000g/t feeding and 1000g/t feeding, and middlings of a first concentration and a second concentration in lead-zinc separation are returned to a sulfide mill for closed circuit grinding;
(3) adding ethidium, sulfur and nitrogen as a lead-zinc-sulfur separation flotation collector, wherein the usage amount of the ethidium, sulfur and nitrogen is 280g/t per ore feeding; sodium humate and lime are added in the zinc-sulfur separation flotation to serve as zinc-sulfur flotation inhibitors, and the addition amounts are 240g/t ore feeding and 12.85kg/t ore feeding respectively; copper sulfate and butyl xanthate are added as an activating agent and a collecting agent for zinc-sulfur separation flotation, and the dosage is 70g/t ore feeding and 30g/t ore feeding respectively.
By the process, 28.87% of lead in the lead concentrate, 4.11% of zinc, 88.63% of lead recovery rate, 49.7% of zinc in the zinc concentrate, 0.18% of lead and 88.00% of zinc recovery rate are obtained.
Comparative example
As shown in fig. 1, the original lead-zinc separation and recovery process of a concentrating and dehydrating sulfide ore in a concentrating and dehydrating plant is to perform closed circuit grinding and then perform lead-zinc separation and flotation, because part of lead-zinc minerals are symbiotic and have fine disseminated granularity, a conventional flotation process of one-coarse-three-fine-sweeping is adopted, a large amount of zinc sulfate and sodium sulfite are needed to be added to inhibit the activated zinc minerals, so that the beneficiation cost is increased, most middlings in concentration I and concentration II are symbionts with insufficient dissociation degree and circulate in the flotation operation process all the time, so that the beneficiation recovery rate is not high, and the operation difficulty is high when qualified lead concentrate is required to be obtained.
As shown in figure 2, the method for improving the lead-zinc separation efficiency by middling external circulation adopts a flotation process of one coarse, three fine and two sweeps according to the comprehensive conditions of floatability characteristics, dissociation degree and the like of lead-zinc ore, wherein middling of the first concentration and the second concentration in the lead-zinc separation is returned to a sulphide ore mill for closed circuit grinding, the grinding fineness is controlled well, the lead-zinc ore is fully dissociated, and the middling is ground to remove residual redundant reagents on the surface of the ore and then enters a separation process, so that reagent addition in production is easy to operate, the lead content of the obtained lead concentrate is over 22 percent, and the zinc content of the zinc concentrate is over 48 percent. The method is used for separating and floating the non-ferrous metal sulfide ores such as copper, zinc, lead, zinc and the like, and has better economic benefit and social benefit.
Claims (7)
1. A method for improving lead-zinc separation efficiency by middling external circulation is characterized by comprising the following specific steps:
(1) concentrating lead-zinc mixed flotation concentrate obtained by coarse flotation of sulphide ore mixed flotation by a thickener, then feeding underflow into an ore mill for regrinding, and adding lime powder into the ore mill to adjust the pH value so as to inhibit iron sulphide ore;
(2) lead-zinc separation
Separating lead and zinc by adding sodium humate, zinc sulfate, sodium sulfite and ethyl sulfur nitrogen, wherein the mass concentration of the ethyl sulfur nitrogen is 1-2%, and middlings of a first concentration and a second concentration in the lead-zinc separation process are returned to grinding for external circulation;
(3) zinc sulphur separation
And separating zinc and sulfur by adding lime, sodium humate, copper sulfate and butyl xanthate to obtain qualified zinc concentrate, and feeding tailings into a tailing pond.
2. The method for improving the lead-zinc separation efficiency through the middling external circulation according to claim 1, wherein the grinding concentration of the ground ore in the step (1) is 60-65%, lime powder is added into the grinding machine in an amount of 400-1000 g/t per ton of the ground ore, and the ground ore qualified fraction is-200 meshes (-0.074mm) and accounts for 88%.
3. The method for improving the lead-zinc separation efficiency through middling external circulation according to claim 1, characterized in that middling of the first concentration and the second concentration in the lead-zinc separation in the step (2) is returned to a sulfide ore mill closed circuit grinding, sodium humate, zinc sulfate and sodium sulfite are added in the lead-zinc separation flotation to serve as lead-zinc-sulfur flotation inhibitors, the mass concentration of the sodium humate is 1-2%, the mass concentration of the zinc sulfate is 2-5%, the mass concentration of the sodium sulfite is 2-5%, and the addition amounts of the sodium humate, the zinc sulfate and the sodium sulfite are respectively 60-100 g/t ore feeding, 480-500 g/t ore feeding and 480-500 g/t ore feeding; adding ethyl sulfur nitrogen as a lead-zinc separation flotation collector, wherein the mass concentration of the ethyl sulfur nitrogen is 1-2%, and the using amount of the ethyl sulfur nitrogen is 40-50 g/t.
4. The method for improving the lead-zinc separation efficiency through the external circulation of middlings according to claim 1, characterized in that sodium humate and lime are added in the zinc-sulfur separation flotation in the step (3) to serve as zinc-sulfur flotation inhibitors, wherein the mass concentration of the lime is 10-20%, the mass concentration of the sodium humate is 1-2%, and the addition amounts are 200-240 g/t-feeding and 10-20 kg/t-feeding respectively; copper sulfate and butyl xanthate are added to serve as an activating agent and a collecting agent for zinc-sulfur separation flotation, the mass concentration of the copper sulfate is 1-2%, the mass concentration of the butyl xanthate is 1-2%, and the dosage of the butyl xanthate is 50-70 g/t and 20-40 g/t respectively.
5. The method for improving the lead-zinc separation efficiency through the external circulation of the middlings as claimed in claim 1, wherein the mineral raw materials are lean fine lead-zinc ores, and the raw ores contain Sn0.26%, Pb0.19%, Sb0.12%, Zn1.37%, S5.47%, Fe5.09%, SiO 2 44.88％，CaO 2 13.21％。
6. The method for improving lead and zinc separation efficiency by external recycle of middlings according to claim 1, wherein the method is characterized in thatThe raw mineral material is medium grade tin-lead-zinc ore, which contains Sn0.33%, Pb0.31%, Sb0.26%, Zn2.87%, S5.59%, Fe7.10%, SiO 2 43.86％,CaO 2 10.46％。
7. The method for improving the lead-zinc separation efficiency through the middling external circulation according to claim 1, wherein the used mineral raw materials are certain high-grade tin-lead-zinc ores, and the raw ores contain 1.06% of Sns, 2.45% of Pbs, 2.23% of Sb2, 10.77% of Zns and 29.03% of S.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB253587A (en) * | 1925-03-16 | 1926-06-16 | Stanley Tucker | Improvements in or relating to the concentration of ores |
| CN102371212A (en) * | 2011-10-19 | 2012-03-14 | 昆明理工大学 | Technology of enhanced-dispersion partial selective and bulk flotation of lead and zinc sulfide ores under low and high alkalinity |
| CN103934117A (en) * | 2014-05-07 | 2014-07-23 | 广西中金岭南矿业有限责任公司 | Technology for flotation of lead and zinc sulfide ores through inflatable floatation columns |
| CN107442267A (en) * | 2017-07-28 | 2017-12-08 | 西部矿业股份有限公司 | A kind of microfine difficulty selects the method for floating of marmatite |
| CN113976307A (en) * | 2021-10-28 | 2022-01-28 | 广西中金岭南矿业有限责任公司 | Flotation separation method of refractory lead-zinc sulfide ore and zinc blende inhibitor thereof |
-
2022
- 2022-04-20 CN CN202210418892.1A patent/CN114849901A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB253587A (en) * | 1925-03-16 | 1926-06-16 | Stanley Tucker | Improvements in or relating to the concentration of ores |
| CN102371212A (en) * | 2011-10-19 | 2012-03-14 | 昆明理工大学 | Technology of enhanced-dispersion partial selective and bulk flotation of lead and zinc sulfide ores under low and high alkalinity |
| CN103934117A (en) * | 2014-05-07 | 2014-07-23 | 广西中金岭南矿业有限责任公司 | Technology for flotation of lead and zinc sulfide ores through inflatable floatation columns |
| CN107442267A (en) * | 2017-07-28 | 2017-12-08 | 西部矿业股份有限公司 | A kind of microfine difficulty selects the method for floating of marmatite |
| CN113976307A (en) * | 2021-10-28 | 2022-01-28 | 广西中金岭南矿业有限责任公司 | Flotation separation method of refractory lead-zinc sulfide ore and zinc blende inhibitor thereof |
Non-Patent Citations (3)
| Title |
|---|
| 刘安荣;唐云;陈福林;: "西藏某铜铅锌硫化矿浮选工艺研究", 矿冶工程 * |
| 张革胜,陈鹏,曾令移,欧乐明: "中矿返回改善磨矿闭路分级提高回收率", 湖南有色金属 * |
| 彭会清等: "提高甘肃某铅锌矿选铅回收率试验", 金属矿山 * |
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