CN102228870A - Method for improving copper-molybdenum separating flotation index through combined use of chemical agents - Google Patents
Method for improving copper-molybdenum separating flotation index through combined use of chemical agents Download PDFInfo
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- CN102228870A CN102228870A CN2011101386636A CN201110138663A CN102228870A CN 102228870 A CN102228870 A CN 102228870A CN 2011101386636 A CN2011101386636 A CN 2011101386636A CN 201110138663 A CN201110138663 A CN 201110138663A CN 102228870 A CN102228870 A CN 102228870A
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Abstract
The present invention belongs to the technical field of non-ferrous metal mineral separation, and particularly relates to a method for improving copper-molybdenum separating flotation index through combined use of chemical agents. The method is characterized in that the copper-molybdenum separation process is divided into two phases; during the first stage, sodium sulfide is used as the inhibitor and the use amount is controlled at 10-17.5 kg/t, and the copper grade in molybdenum concentrate can be controlled at 11.7-18.0% after copper-molybdenum separating flotation for 3-7 minutes; and during the second stage, 2.5 kg/t of sodium thioglycolate is used for the separating flotation of the molybdenum concentrate obtained in the first phase for 3-5 minutes and the tailings are returned to the first stage. The method provided by the invention has the beneficial effects that: using the technical scheme provided by the invention can achieve a better separation effect, the copper grade in the molybdenum concentrate is less than 6.9%, the molybdenum grade reaches 53-58%, the recovery rate is more than 94%, the COD (chemical oxygen demand) of wastewater is lower than 200 and the treatment cost of the wastewater is significantly reduced.
Description
Technical field
The invention belongs to the non-ferrous metal ore technical field, relate in particular to a kind of method that improves copper molybdenum separating flotation index by drug combination.
Background technology
Make a general survey of domestic and international copper molybdenum isolation technics, be and press down the floating molybdenum of copper.Wherein the inhibitor of copper has Cymag, vulcanized sodium, sodium thioglycolate or nox's reagent etc., but mostly is single drug, several inhibitor unite the use field, it is blank studying several.
With the most representative domestic Jin Dui city molybdenum already is example, and its molybdenum selected (promptly floating molybdenum presses down copper sulphur) regime of agent is: collecting agent kerosene, foaming agent terpenic oil, inhibitor sodium thioglycolate.Production target: molybdenum concentrate grade 52%-57%, molybdenum recovery is greater than 85%.
Molybdenum ore described in the present invention is composed the small-sized copper sulfide molybdenum association mineral deposit that is stored in quartz, the diabase fissure zone, the raw ore main component is Cu:0.5 ~ 1.5%, molybdenum: 0.1 ~ 0.5%, S:5 ~ 10%, wherein molybdenite becomes flakey or tabular being distributed in the ore, mainly be independent part and occur, be easy to dissociate, flotation.
Present used flow process is the bulk flotation of first copper molybdenum, and then the separation of copper molybdenum, and the separation process of copper molybdenum uses inhibitor to be vulcanized sodium for pressing down the floating molybdenum of copper.For a long time, the content of the separating obtained molybdenum concntrate of copper molybdenum the inside copper is higher, surpasses 0.65%, influences the quality of concentrate, and is big as the inhibitor amount of sodium sulfide in addition, causes the copper molybdenum to separate waste water COD and exceed standard, and brings than the overall situation problem.For addressing these problems, carry out the effect that the copper molybdenum separates and explore uniting other medicaments.Summary of the invention
The objective of the invention is to overcome above-mentioned technical defective, a kind of method that improves copper molybdenum separating flotation index by drug combination is provided.
Drug combination technology: in original worker's process conditions promptly: concentration 30%, the fineness of selected ore pulp are 85%, one roughing, scan for three times, on five selected bases, the copper molybdenum is divided into two stages, phase I uses vulcanized sodium to make inhibitor, and dosing is controlled at 10-17.5kg/t, copper molybdenum separating flotation after 3-7 minute in the molybdenum concntrate grade of copper can be controlled in 11.7 ~ 18.0%; Second stage was used sodium thioglycolate separating flotation phase I gained molybdenum concntrate 3-5 minute according to the consumption of 2.5kg/t, mine tailing turn back to the phase I selected in, so can reach separating effect preferably, the grade of copper is lower than 6.9% in the molybdenum concntrate, the grade of molybdenum reaches 53 ~ 58%, the rate of recovery is greater than 94%, and COD value of waste water is lower than 200, and processing cost reduces greatly.
Wherein vulcanized sodium has the effect of very strong inhibition sulphur, can be as the inhibitor of sulfide all except that molybdenite.
The experimental basis of drug combination:
Use vulcanized sodium to do inhibitor result such as accompanying drawing 1 separately, as seen when consumption during less than 30kg/t, increase with amount of sodium sulfide, copper molybdenum separating effect significantly increases, molybdenum concentrate grade improves very fast, but when consumption reached 30kg/t, separating effect tended towards stability, but the grade of copper is difficult to be controlled at below 7% in the molybdenum concntrate.COD value higher (more than 300) in addition, the influence that environment is caused is bigger, can not directly discharge, and processing cost is higher, has in a disguised form improved production cost.
Use separately sodium thioglycolate to do inhibitor result such as accompanying drawing 2, as seen, separate reagent removal completely during bulk concentrate with sodium thioglycolate, separating effect is better, and the molybdenum concntrate quality is higher, and the COD value is lower, and need not processing can discharge.But, when separating the halfway bulk concentrate of reagent removal, be subjected to the interference of xanthate, sodium thioglycolate works hardly, and in the actual production, considers cost factor, can not carry out reagent removal completely and handle, therefore can't directly use sodium thioglycolate to substitute vulcanized sodium and make copper molybdenum separation inhibitor.
Unite and use these two kinds of medicines to do inhibitor result such as accompanying drawing 3, visible drug combination can effectively solve single high problem of copper grade in the molybdenum concntrate during with vulcanized sodium, and waste discharge COD value falls between, and deals with slightly and can discharge.
Beneficial effect of the present invention is
:Adopt technical scheme of the present invention, can reach separating effect preferably, the grade of copper is lower than 6.9% in the molybdenum concntrate, and the grade of molybdenum reaches 53 ~ 58%, and the rate of recovery is greater than 94%, and COD value of waste water is lower than 200, and processing cost reduces greatly.
The specific embodiment:
Further specify technical scheme of the present invention below by specific embodiment, but content of the present invention is not exceeded with embodiment.
Embodiment 1
Drug combination technology: on the basis of original worker's process conditions, the copper molybdenum is divided into two stages, the phase I uses vulcanized sodium to make inhibitor, and dosing is controlled at 10kg/t, copper molybdenum separating flotation after 5 minutes in the molybdenum concntrate grade of copper can reach 18.0%; Second stage was used sodium thioglycolate separating flotation phase I gained molybdenum concntrate 4 minutes according to the consumption of 2.5kg/t, mine tailing turn back to the phase I selected in, so can reach separating effect preferably, the grade of copper is 6.6% in the molybdenum concntrate, the grade of molybdenum reaches 53.3%, the rate of recovery is 95.9%, and COD value of waste water is 120.
Drug combination technology: on the basis of original worker's process conditions, the copper molybdenum is divided into two stages, the phase I uses vulcanized sodium to make inhibitor, and dosing is controlled at 15kg/t, copper molybdenum separating flotation after 3 minutes in the molybdenum concntrate grade of copper can reach 12.6%; Second stage was used sodium thioglycolate separating flotation phase I gained molybdenum concntrate 3 minutes according to the consumption of 2.5kg/t, mine tailing turn back to the phase I selected in, so can reach separating effect preferably, the grade of copper is 4.5% in the molybdenum concntrate, the grade of molybdenum reaches 55.1%, the rate of recovery is 96.2%, and COD value of waste water is 170.
Embodiment 3
Drug combination technology: on the basis of original worker's process conditions, the copper molybdenum is divided into two stages, phase I uses vulcanized sodium to make inhibitor, and dosing is controlled at 17.5kg/t, copper molybdenum separating flotation after 7 minutes in the molybdenum concntrate grade of copper can be controlled in 11.7%; Second stage was used sodium thioglycolate separating flotation phase I gained molybdenum concntrate 5 minutes according to the consumption of 2.5kg/t, mine tailing turn back to the phase I selected in, so can reach separating effect preferably, the grade of copper is 4.2% in the molybdenum concntrate, the grade of molybdenum reaches 55.7%, the rate of recovery reaches 96.7%, and COD value of waste water is 197.
Claims (4)
1. one kind is improved the method for copper molybdenum separating flotation index by drug combination, and it is characterized in that: with vulcanized sodium, sodium thioglycolate is united use and pressed down the floating molybdenum of copper as inhibitor.
2. the method for raising copper molybdenum separating flotation index as claimed in claim 1, it is characterized in that: with vulcanized sodium, the amount ratio of sodium thioglycolate is: 10-17.5:2.5.
3. the method for raising copper molybdenum separating flotation index as claimed in claim 1, it is characterized in that: concrete steps are: in original worker's process conditions promptly: concentration 30%, the fineness of selected ore pulp are 85%, one roughing, scan for three times, on five selected bases, the copper molybdenum is divided into two stages, the phase I uses vulcanized sodium to make inhibitor, dosing is controlled at 10-17.5kg/t, copper molybdenum separating flotation after 3-7 minute in the molybdenum concntrate grade of copper can be controlled in 11.7 ~ 18.0%; Second stage was used sodium thioglycolate separating flotation phase I gained molybdenum concntrate 3-5 minute according to the consumption of 2.5kg/t, mine tailing turn back to the phase I selected in.
4. the method for raising copper molybdenum separating flotation index as claimed in claim 1, it is characterized in that: concrete steps are: promptly concentration 30%, the fineness of selected ore pulp are 85% in original worker's process conditions, one roughing, scan for three times, on five selected bases, the copper molybdenum is divided into two stages, the phase I uses vulcanized sodium to make inhibitor, dosing is controlled at 15kg/t, copper molybdenum separating flotation after 5 minutes in the molybdenum concntrate grade of copper can be controlled in 12.6%; Second stage was used sodium thioglycolate separating flotation phase I gained molybdenum concntrate 4 minutes according to the consumption of 2.5kg/t, mine tailing turn back to the phase I selected in.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513220A (en) * | 2011-12-21 | 2012-06-27 | 大冶有色设计研究院有限公司 | Chemical composition for recycling copper concentrate and molybdenum concentrate from copper and molybdenum mixed concentrate pulp |
| CN103521358A (en) * | 2013-10-28 | 2014-01-22 | 长春黄金研究院 | Method for preprocessing copper and molybdenum bulk concentrates before separation flotation |
| CN106583050A (en) * | 2016-03-18 | 2017-04-26 | 中国黄金集团内蒙古矿业有限公司 | Copper-molybdenum separating flotation method for low-grade copper-molybdenum ore |
| CN106944246A (en) * | 2017-04-06 | 2017-07-14 | 西藏华泰龙矿业开发有限公司 | The method of copper-cobalt ore flotation agent and copper-cobalt ore |
| CN106955792A (en) * | 2017-05-25 | 2017-07-18 | 湖南有色金属研究院 | A kind of antimony sulfide mixed concentrate floatation separation process and composite restrainer |
| CN113908996A (en) * | 2021-08-18 | 2022-01-11 | 西北矿冶研究院 | Copper-molybdenum separation combined regulator and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513220A (en) * | 2011-12-21 | 2012-06-27 | 大冶有色设计研究院有限公司 | Chemical composition for recycling copper concentrate and molybdenum concentrate from copper and molybdenum mixed concentrate pulp |
| CN103521358A (en) * | 2013-10-28 | 2014-01-22 | 长春黄金研究院 | Method for preprocessing copper and molybdenum bulk concentrates before separation flotation |
| CN106583050A (en) * | 2016-03-18 | 2017-04-26 | 中国黄金集团内蒙古矿业有限公司 | Copper-molybdenum separating flotation method for low-grade copper-molybdenum ore |
| CN106944246A (en) * | 2017-04-06 | 2017-07-14 | 西藏华泰龙矿业开发有限公司 | The method of copper-cobalt ore flotation agent and copper-cobalt ore |
| CN106955792A (en) * | 2017-05-25 | 2017-07-18 | 湖南有色金属研究院 | A kind of antimony sulfide mixed concentrate floatation separation process and composite restrainer |
| CN106955792B (en) * | 2017-05-25 | 2019-04-02 | 湖南有色金属研究院 | A kind of antimony sulfide mixed concentrate floatation separation process and composite restrainer |
| CN113908996A (en) * | 2021-08-18 | 2022-01-11 | 西北矿冶研究院 | Copper-molybdenum separation combined regulator and application method thereof |
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