Method for recovering gold, antimony and lead from floatation tailings

A technology for flotation tailings and recovery of gold, which is applied in the field of comprehensive utilization of resources, can solve the problems of complex properties, large dosage of chemicals, and high cost of activated carbon drug removal, and achieve the effect of simple process and good effect

Active Publication Date: 2015-05-20
JIANGXI YIYUAN REGENERATION RESOURCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nature of gold-bearing polymetallic ores in a certain area in Northwest China is complex, the valuable minerals gold, antimony, and lead are embedded with fine particle size, and the content of easily muddy substances such as mica and chlorite is high, and flotation is difficult, resulting in The high content of gold, antimony and lead has caused a great waste of resources to the mine
[0003] ZL201210521689 discloses a method for flotation separation of antimony-gold sulfide minerals. The antimony-gold ore is processed. The antimony-gold ore is firstly ground and then mixed for flotation. Antimony floating process, to obtain gold concentrate and antimony concentrate, the existing problems are high cost of activated carbon drug removal, poor process stability
[0004] "Experimental Research on Flotation Separation of Polymetallic Sulfide Ore Containing Gold, Antimony and Arsenic" records a method of flotation separation of antimony and gold and arsenic. Sodium sulfide and sodium carbonate inhibit stibnite and realize the separation of gold and antimony. The existing problems are that sodium sulfide is easy to oxidize and the cost of chemicals is high.
[0005] "Stu

Method used

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  • Method for recovering gold, antimony and lead from floatation tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A flotation tailings contains 0.85g / t of gold, 0.34% of antimony, and 0.65% of lead. Process mineralogy analysis shows that pyrite is the main carrier mineral of gold, and the antimony minerals are mainly stibnite. The lead mineral is mainly galena.

[0063] according to figure 1 The shown process carries out the recovery of gold, antimony and lead, and the specific steps are as follows:

[0064] (1) re-election

[0065] The flotation tailings and water are adjusted to 20%, and the spiral chute is used to re-select the flotation tailings to obtain a gravity-selected concentrate with a yield of 56.25%.

[0066] (2) Grinding

[0067] Grinding the gravity-selected concentrate, the grinding concentration is 70%, and the grinding fineness is -0.074mm, accounting for 95%.

[0068] (3) Mixed flotation

[0069] (a) rough selection

[0070] Adjust the pulp concentration to 28%, add 400g / t of sodium carbonate and 250g / t of sodium hexametaphosphate, and stir for 7 minutes; t...

Embodiment 2

[0109] A certain flotation tailings contains 0.52g / t of gold, 0.51% of lead, and 0.23% of antimony. The results of technological mineralogy show that the main carrier minerals of gold are pyrite and arsenopyrite, and stibnite is antimony. The main form of occurrence, lead-bearing minerals mainly exist in the form of galena.

[0110] according to figure 1 The shown process carries out the recovery of gold, antimony and lead, and the specific steps are as follows:

[0111] (1) re-election

[0112] The flotation tailings and water are adjusted to 18%, and the spiral chute is used to re-select the flotation tailings to obtain a gravity-selected concentrate with a yield of 61.35%.

[0113] (2) Grinding

[0114] Grinding the gravity-selected concentrate, the grinding concentration is 60%, and the grinding fineness is -0.074mm, accounting for 85%.

[0115] (3) Mixed flotation

[0116] (a) rough selection

[0117] Adjust the pulp concentration to 20%, add sodium carbonate 200g / t...

Embodiment 3

[0156] A flotation tailings contains 0.49g / t of gold, 0.60% of lead, and 0.28% of antimony. The research results of technological mineralogy show that the main carrier mineral of gold is pyrite, and stibnite is the main occurrence form of antimony. Lead-bearing minerals mainly exist in the form of galena.

[0157] according to figure 1 The shown process carries out the recovery of gold, antimony and lead, and the specific steps are as follows:

[0158] (1) re-election

[0159] The flotation tailings and water are adjusted to 17.5%, and the spiral chute is used to re-select the flotation tailings to obtain a gravity-selected concentrate with a yield of 58.10%.

[0160] (2) Grinding

[0161] Grinding the gravity-selected concentrate, the grinding concentration is 64%, and the grinding fineness is -0.074mm, accounting for 88%.

[0162] (3) Mixed flotation

[0163] (a) rough selection

[0164] Adjust the pulp concentration to 24%, add sodium carbonate 300g / t and sodium hexam...

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Abstract

The invention provides a method for recovering gold, antimony and lead from floatation tailings, and belongs to the technical field of resource comprehensive utilization. The method comprises the steps of first removing slime in the floatation tailings through gravity separation, then grinding gravity concentrates and carrying out gold, antimony and lead bulk flotation, re-grinding the concentrates obtained through bulk floatation to suppress antimony and float gold and lead, carrying out gold and lead separating flotation on the obtained concentrates, carrying out activated antimony separation on the obtained floatation tailings, and finally obtaining gold concentrates, lead concentrates and antimony concentrates. According to the method, coarse particle minerals are enriched in advance through the open path flow of gravity concentration, a large amount of slime in the floatation tailings is got rid of, and the negative influence of the slime on the follow-up flotation is avoided; the full open path flow of bulk flotation is favorable for making coenobia to enter the concentrates, the recovery rate of gold, antimony and lead is greatly increased, and secondary slime formed by re-grinding is prevented from entering the concentrates. The method has important economic value and environment benefits to reuse of the floatation tailings.

Description

technical field [0001] The invention relates to the technical field of resource comprehensive utilization, in particular to a method for comprehensively recovering gold, antimony and lead from flotation tailings. Background technique [0002] Pyrite, arsenopyrite, stibnite, galena, etc. are often the carrier minerals of gold. The minerals have similar floatability and are difficult to separate in the flotation process. The nature of gold-bearing polymetallic ores in a certain area in Northwest China is complex, the valuable minerals gold, antimony, and lead are embedded with fine particle size, and the content of easily muddy substances such as mica and chlorite is high, and flotation is difficult, resulting in The high content of gold, antimony and lead has caused a great waste of resources in mines. [0003] ZL201210521689 discloses a method for flotation separation of antimony-gold sulfide minerals. The antimony-gold ore is processed. The antimony-gold ore is firstly gro...

Claims

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Application Information

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IPC IPC(8): B03B9/00B03B5/62B03B1/00B03D1/00
Inventor 李正要王金虎林蜀勇王梦成
Owner JIANGXI YIYUAN REGENERATION RESOURCE CO LTD
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