CN104815762B - A kind of preparation method of tennantite collecting agent - Google Patents

Abstract

A kind of preparation method of tennantite collecting agent, is sodium sulfide by sodium sulfide, sodium hydroxide and water first in mass ratio：Sodium hydroxide：Water=1～2:1～2:2～5 mix to obtain solution 1, then by 25～30% polyoxyethylenated alcohol sodium sulfate in mass ratio=1～2:3～7 add in solution 1, stir to dissolving to obtain solution 2 under the conditions of 70～75 DEG C of temperature；Then by phosphate ester, oleum in mass ratio=1～2:1～3:3～7 add in solution 2, and obtained from reaction under the conditions of 2～3Mpa, liquid preparation is described tennantite collecting agent.

Description

A kind of preparation method of arsenite tetrahedrite collector

1. Technical field

The invention relates to a method for preparing a collector for arsenite tetrahedrite, in particular to a method for preparing a collector for arsenite tetrahedrite.

2. Background technology

At present, the flotation recovery of copper sulfide at home and abroad is generally activated by sulfuric acid or copper sulfate, and then the flotation is collected by adding xanthate, black medicine, sulfur nitrogen, etc. The flotation recovery rate of sulfide ore is between 85% and 92%. , the harvesting effect is ideal. However, when the recovered mineral is arsenite, the effect of using the above collectors is not obvious. The reason is that: on the one hand, the buoyancy of arsenite is not as good as that of other copper sulfides; Copper ions are easily oxidized, which affects its buoyancy; thirdly, a small amount of zinc and iron ions in arsenite tetrahedrite exist in the same quality and shape, which affects its buoyability. How to prepare selective collectors for arsenite tetrahedrite to increase the recovery rate of arsenite tetrahedrite has always been a concern in the mineral processing circles at home and abroad.

3. Contents of the invention

The object of the present invention is to provide a preparation method of arsenite tetrahedrite collector. The collector prepared by the method can realize efficient flotation recovery of arsenite tetrahedrite under the condition of adding a small amount of copper sulfate for activation.

The present invention adopts the following technical solutions to achieve the above object: a preparation method of arsenite tetrahedrite collector, comprising the steps of: first sodium sulfide, sodium hydroxide and water are mixed by mass ratio sodium sulfide: sodium hydroxide: water=1 ～2:1～2:2～5 were mixed to obtain solution 1, and then 25～30% fatty alcohol polyoxyethylene ether sodium sulfate was added to solution 1 according to the mass ratio = 1～2:3～7, at a temperature of 70～ Stir at 75°C until dissolved to obtain solution 2; then add phospholipids and oleum to solution 2 at a mass ratio of 1-2:1-3:3-7, and react under the condition of 2-3Mpa to obtain a liquid medicine It is the arsenite tetrahedrite collector.

During flotation, the pH value of the slurry is 8.5-9; during the flotation process, the ore is ground until the mineral monomers are dissociated, then the gangue inhibitor is added, then the activator is added, the collector is added, and finally Foaming agent to collect arsenite tetrahedrite.

The total amount of collector is: 80~100g/t.

Unless otherwise specified, the percentages mentioned in the present invention are all mass percentages, and the sum of the content percentages of each component is 100%.

Concrete advantages of the present invention are:

1. The collector prepared by the present invention can collect arsenite, is easily soluble in water, and has good selectivity and low temperature resistance.

2. The dosage of medicine is less.

4. Specific implementation

The technical solutions of the present invention will be further described below through specific examples.

Example 1

An example of the preparation method of the arsenite tetrahedrite collector of the present invention comprises the following steps:

First sodium sulfide, sodium hydroxide and water are mixed by mass ratio sodium sulfide: sodium hydroxide: water=1:1:2 to obtain solution 1, then 25% fatty alcohol polyoxyethylene ether sodium sulfate is mixed by mass ratio=1 :3 is added to solution 1, stirred at a temperature of 70°C until dissolved to obtain solution 2; then phospholipids and oleum are added to solution 2 at a mass ratio of 1:1:3, and the resulting liquid is reacted under the condition of 2Mpa The agent is the arsenite tetrahedrite collector.

Example 2

Another example of the preparation method of the arsenite tetrahedrite collector of the present invention comprises the following steps:

First sodium sulfide, sodium hydroxide and water are mixed by mass ratio sodium sulfide: sodium hydroxide: water=2:2:5 to obtain solution 1, then 30% fatty alcohol polyoxyethylene ether sodium sulfate is mixed by mass ratio=2 :7 was added to solution 1, stirred at a temperature of 75°C until dissolved to obtain solution 2; then phospholipids and oleum were added to solution 2 in a mass ratio of 2:3:7, and the liquid obtained by reacting under the condition of 3Mpa The agent is the arsenite tetrahedrite collector.

Example 3

This embodiment is an application example of the described arsenite collector in flotation of arsenite.

1. Mineral raw materials:

The copper sulfide ore used as the mineral raw material has a copper content of 5.23%, an arsenic content of 1.07%, a sulfur content of 7.92%, and an iron content of 3.10%. The phase analysis shows that the copper mineral in the ore is dominated by arsenite. Mainly, there are also a small amount of chalcopyrite, chalcocite and malachite; gangue minerals mainly include pyrite, pyrrhotite, silica and carbonate calcium magnesium minerals.

2. Chemical system and operating conditions: Grind the ore until the mineral monomers are decomposed, then add lime to adjust the pH of the slurry to 8.5-9, then add 800g/t sodium humate as an inhibitor, and then add 100g/t copper sulfate for activation agent, then add the collector agent 80g/t, and finally add foaming agent 2# oil 70g/t to carry out the collection test on copper minerals. Under the condition that the ore copper content is 5.23%, after one roughing, three times of sweeping and three times of beneficiation, a flotation copper concentrate with a copper content of 34.53% and a recovery rate of 91.21% is obtained.

Example 4

This embodiment is another application example of the arsenite collector floating in the arsenite extraction.

1. Mineral raw materials:

The copper sulfide ore used as the mineral raw material has a copper content of 7.35%, an arsenic content of 1.56%, a sulfur content of 8.24%, and an iron content of 5.16%. The phase analysis shows that the copper mineral in the ore is dominated by arsenite. Mainly, there are also a small amount of chalcopyrite, chalcocite and malachite; gangue minerals mainly include pyrite, pyrrhotite, silica and carbonate calcium magnesium minerals.

2. Chemical system and operating conditions: Grind the ore until the mineral monomers are decomposed, then add lime to adjust the pH of the slurry to 8.5-9, then add 800g/t sodium humate as an inhibitor, and then add 100g/t copper sulfate for activation agent, then add the collector agent 100g/t, and finally add foaming agent 2# oil 70g/t to carry out the collection test on copper minerals. Under the condition of feed copper content of 7.35%, after one roughing, three times of sweeping and three times of beneficiation, a flotation copper concentrate with a copper content of 35.07% and a recovery rate of 92.16% was obtained.

Claims (3)

1. a kind of preparation method of tennantite collecting agent is it is characterised in that comprise the steps：First by sodium sulfide, hydrogen-oxygen Change sodium and water sodium sulfide in mass ratio：Sodium hydroxide：Water=1～2:1～2:2～5 mix to obtain solution 1, then by 25～30% Polyoxyethylenated alcohol sodium sulfate：Solution 1 in mass ratio=1～2:3～7 add in solution 1, in 70～75 DEG C of conditions of temperature Under stir to dissolving to obtain solution 2；Then by phosphate ester：Oleum：Solution 2 in mass ratio=1～2:1～3:3～7 additions are molten In liquid 2, react the liquid preparation obtaining under the conditions of 2～3MPa and be described tennantite collecting agent.

2. application in flotation tennantite for the tennantite collecting agent described in claim 1 is it is characterised in that during flotation, Slurry pH is 8.5～9；In floatation process, Ore ore grinding to mineral monomer is dissociated, is subsequently adding activator, then plus described Collecting agent, finally plus foaming agent carries out collecting to tennantite,

The total consumption of collecting agent is：80～100 g/t.

3. application in flotation tennantite for the tennantite collecting agent according to claim 2 is it is characterised in that use When, described collecting agent stock solution is added.