Polymetallic sulfide ore flotation separation inhibitor and flotation separation method thereof

A technology for sulfide ores and polymetals, applied in flotation, solid separation and other directions, can solve the problems of poor ore adaptability, high environmental protection pressure, poor inhibition effect, etc., and achieve the effect of convenient addition, safe use and strong inhibition effect.

Active Publication Date: 2020-01-07
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims at the problems of high toxicity of existing inorganic inhibitors, difficulty in post-treatment, and high pressure on environmental protection in the flotation and separation process of polymetallic sulfide ores, and at the same time solves the problems of poor adaptability of existing organic inhibitors, poor inhibitory effect, and dosage Due to major technical deficiencies, a polymetallic sulfide ore flotation separation inhibitor and its flotation separation method are provided. The obtained polymetallic sulfide ore flotation separation inhibitor not only has low toxicity, is safe to use, is convenient to add, It has the advantages of easy access to raw materials, and has a strong inhibitory effect on various sulfide ores such as chalcopyrite, galena, pyrite, bismuthite, etc., and can well achieve the purpose of flotation separation of polymetallic sulfide ores. It can be widely used in copper-lead separation, lead-zinc separation, molybdenum-lead, molybdenum-sulfur, molybdenum-bismuth, copper-molybdenum, copper-lead-molybdenum and other polymetallic sulfide ore flotation separation process to improve its separation index

Method used

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  • Polymetallic sulfide ore flotation separation inhibitor and flotation separation method thereof
  • Polymetallic sulfide ore flotation separation inhibitor and flotation separation method thereof
  • Polymetallic sulfide ore flotation separation inhibitor and flotation separation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The polymetallic sulfide ore flotation separation inhibitor is prepared by the following steps:

[0029] Put 12.0g of polymaleic anhydride (maleic anhydride content 0.1mol) in a 100ml three-necked bottle, then add 40ml of water, after stirring thoroughly, add 0.74g of propylenediamine (0.01mol of propylenediamine) at one time, and fully React for 3 hours; then add 20.0 g of 40% sodium hydroxide solution (containing 0.2 mol of sodium hydroxide), stir to make it fully dissolved, gradually warm up to 40 ° C, and then add 0.90 g of carbon disulfide (0.012 mol of carbon disulfide) , fully stirred for 2 hours, then heated up to 60° C., and continued to react for 3 hours. After the reaction was completed, a light yellow polymetallic sulfide ore flotation separation inhibitor solution with a mass concentration of about 25% was obtained.

Embodiment 2

[0031] The polymetallic sulfide ore flotation separation inhibitor is prepared by the following steps:

[0032] Put 12.0g of polymaleic anhydride (maleic anhydride content 0.1mol) in a 100ml there-necked bottle, then add 40ml of water, after stirring fully, add 1.03g of diethylenetriamine (0.01mol of diethylenetriamine) at one time, 30 ℃ fully reacted for 3 hours; then add 20.0g of 40% sodium hydroxide solution (containing 0.2mol of sodium hydroxide), stir to make it fully dissolved, gradually warm up to 40°C, then add 0.90g of carbon disulfide (0.012mol of carbon disulfide), fully stirred for 2 hours, then heated up to 60° C., and continued to react for 3 hours. After the reaction was completed, an orange to reddish-brown polymetallic sulfide ore flotation separation inhibitor solution with a mass concentration of about 25% could be obtained.

Embodiment 3

[0034] The mineral raw material is 2.0g of chalcopyrite and galena pure mineral artificial mixed ore with a mass ratio of 2:3. The flotation separation test is carried out in the XFG5-35 hanging tank flotation machine, 40ml of water is added, and the flotation machine speed is adjusted to 1754r / min, then adjust the pH in the tank to 8-9 with sodium hydroxide, then add the polymetallic sulfide ore flotation separation inhibitor prepared in Example 1 of the present invention, the consumption is 2mg / L, using O-isopropyl -N-ethylthiocarbamate is chalcopyrite collector, methyl isobutyl carbinol is used as foaming agent, the amount of collector and foaming agent is 10mg / L, and the flotation time is 4min. Copper concentrate with a copper grade of 28.9%, lead content of 12.1%, and a recovery rate of 93.1% was obtained through roughing, and lead concentrate with a lead grade of 80.6%, copper content of 1.5%, and a recovery rate of 90.5%.

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Abstract

The invention discloses a polymetallic sulfide ore flotation separation inhibitor and a flotation separation method thereof; polymaleic anhydride reacts with an organic compound containing a pluralityof amino groups to obtain an intermediate M, and then the intermediate M reacts with carbon disulfide in an alkaline solution to obtain a polymetallic sulfide ore flotation separation inhibitor. Themulti-metal sulfide ore flotation separation inhibitor provided by the invention is simple in preparation process and mild in reaction condition, has the advantages of safety in use, convenience in addition, easiness in obtaining raw materials and the like, also has the technical advantages of low toxicity, environmental friendliness, small dosage and good inhibition effect, and can effectively replace a traditional inhibitor. The multi-metal sulfide ore flotation separation inhibitor can effectively inhibit impurity minerals such as galena, chalcopyrite, sphalerite, pyrite and bismuthite, canbe widely applied to the flotation separation process of multi-metal sulfide ores such as copper lead, lead zinc, molybdenum lead, molybdenum sulfur, molybdenum bismuth, copper molybdenum and copperlead molybdenum, and is beneficial to improving the separation index.

Description

technical field [0001] The invention relates to a polymetallic sulfide ore flotation separation inhibitor and a flotation separation method thereof, belonging to the technical field of polymetallic sulfide ore beneficiation. Background technique [0002] Mineral resources play a vital role in the development of the national economy. The copper, lead, zinc, molybdenum and other non-ferrous metals extracted from them have made great contributions to the development of the national economy and are widely used in aerospace, electronic technology, High-performance materials, defense technology and other fields. However, the efficient and comprehensive utilization of refractory polymetallic resources has not been effectively solved, such as refractory polymetallic resources of copper, lead and zinc, and refractory polymetallic resources of molybdenum. [0003] Flotation is one of the most commonly used methods in the processing of mineral resources. In the process of copper-lead...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/01B03D1/02B03D101/06B03D103/02
CPCB03D1/01B03D1/02B03D2201/06B03D2203/02
Inventor 张行荣朱阳戈路亮郑桂兵赵志强宋振国罗思岗肖婉琴韩龙
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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