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Separation method for high oxidation rate type gold and tungsten accompanying molybdenum ores

A technology of oxidation rate and molybdenum ore, which is applied in the field of beneficiation of molybdenum ore with high oxidation rate, can solve the problems of poor stability, low cost of beneficiation agents, and large amount of beneficiation agents.

Inactive Publication Date: 2016-12-14
广东省资源综合利用研究所 +1
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of poor process stability of refractory oxidized molybdenum ore and large amount of beneficiation agents and further improve the separation index; provide a comprehensive recovery of molybdenum, tungsten, especially gold with high separation index, stable process and low cost of beneficiation agents relatively low selection method

Method used

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  • Separation method for high oxidation rate type gold and tungsten accompanying molybdenum ores
  • Separation method for high oxidation rate type gold and tungsten accompanying molybdenum ores

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Effect test

Embodiment 1

[0025] Containing 0.20% Mo, WO in raw ore 3 0.096%, Au 0.22g / t, molybdenum oxidation rate 90.43%, molybdenum sulfide content 0.018%, press figure 1 The process and the dosage of chemicals listed in Table 1 are used to obtain sulfur concentrates containing Mo18.92% and Au 235.5g / t by iron sulfide flotation, and the recovery rates are 4.94% and 53.45% respectively; molybdenum-tungsten flotation and molybdenum-tungsten medium Re-election to obtain Mo 5.37%, WO 32.87%, the recovery rates are 80.01%, 87.66% molybdenum-tungsten mixed concentrate. The cyanidation gold leaching rate of molybdenum-tungsten mixed concentrate containing Au0.89g / t and the occupancy rate of 11.75% of the original ore is 66.30%, and the recovery rate of the original ore is 7.79%. The total recoveries of molybdenum, tungsten and gold reached 84.95%, 87.66% and 61.24% respectively.

Embodiment 2

[0027] Containing Mo 0.29% and WO in raw ore 3 0.063%, Au 0.56g / t, molybdenum oxidation rate 85.71%, molybdenum sulfide content 0.042%, press figure 1 The process and the dosage of reagents listed in Table 1 were used to obtain sulfur concentrates containing 16.26% Mo and 146.0g / t Au by iron sulfide flotation, and the recovery rates of molybdenum and gold were 11.55% and 53.93% respectively; molybdenum-tungsten flotation and molybdenum-tungsten Re-election of middle ore to obtain Mo 5.07%, WO 3 1.47%, molybdenum and tungsten recovery rates are 64.64%, 84.64% molybdenum-tungsten mixed concentrate. The cyanidation gold leaching rate of the molybdenum-tungsten mixed concentrate containing 3.40g / t of Au and the occupancy rate of 22.43% of the original ore was 70.69%, and the recovery rate of the original ore was 15.86%. The total recoveries of ore molybdenum, tungsten and gold are Mo 76.19%, WO 3 84.64%, Au 69.79%.

Embodiment 3

[0029] Containing 1.01% Mo and WO in raw ore 3 0.137%, Au 2.45g / t, molybdenum oxidation rate 80.19%, molybdenum sulfide content 0.20%, press figure 1 The process and the amount of reagents listed in Table 1 are used for molybdenum sulfide flotation to obtain molybdenum sulfide concentrates containing 47.10% Mo and 470.6g / t Au, and the recovery rates of molybdenum and gold are 13.79% and 56.77% respectively; Mo 6.58%, Au 19.7g / t, molybdenum and gold recovery rates are 9.59% and 11.84% respectively; WO 3 2.89%, the recoveries of molybdenum and tungsten are Mo 72.15%, WO 3 81.29%. The cyanidation gold leaching rate of the molybdenum-tungsten mixed concentrate containing 10.1g / t of Au and the occupancy rate of 16.40% of the original ore was 70.69%, and the recovery rate of the original ore was 11.59%. The total recoveries of ore molybdenum, tungsten and gold are Mo 95.53%, WO 3 81.29%, Au 80.20%.

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Abstract

A separation method for high oxidation rate type gold and tungsten accompanying molybdenum ores comprises the following steps: 1, crushing raw ores and grinding the ores; 2, carrying out ferric sulfide flotation, to be specific, carrying out rough separation on the raw ores of which the Mo content is lower than 0.3% once; carrying out scavenging once; and carrying out precise separation for four times so as to obtain sulfur concentrates and sulfur tailings; 3, carrying out molybdenum and tungsten flotation, to be specific, carrying out rough separation on the sulfur tailings once; carrying out scavenging once, and carrying out precise separation for three times so as to obtain molybdenum and tungsten concentrates and molybdenum and tungsten tailings; and combining the tailings precisely separated for the first time and foams scavenged for the first time as molybdenum and tungsten middling re-separation fed ores; 4, carrying out molybdenum and tungsten middling re-separation, to be specific, carrying out rough separation on molybdenum and tungsten middlings once; carrying out scavenging once; carrying out precise separation twice so as to obtain molybdenum and tungsten re-separated concentrates and molybdenum and tungsten re-separated tailings; and combining the molybdenum and tungsten concentrates obtained by molybdenum and tungsten flotation and the molybdenum and tungsten re-separated concentrates obtained by re-separating the molybdenum and tungsten middlings; and 5, grinding molybdenum and tungsten mixed concentrates, adding lime and sodium cyanide and leaching so as to obtain gold leachate and leaching residues. The separation method provided by the invention comprehensively recycles molybdenum and tungsten, is stable in technology and relatively lower in ore separation agent cost.

Description

technical field [0001] The invention relates to a method for sorting high-oxidation rate molybdenum ores containing associated gold and tungsten, including molybdenum sulfide flotation and iron sulfide flotation for recovering molybdenum and gold, molybdenum and tungsten flotation for recovering molybdenum and tungsten, and Molybdenum tungsten concentrate cyanidation gold leaching method for further recovery of gold chemical separation method. Background technique [0002] Most of the molybdenum oxide minerals are secondary oxide minerals. There are many types of minerals, but the content is very small. They are often associated with other molybdenum sulfide, tungsten, lead and uranium deposits. They are only considered for comprehensive recovery when developing other minerals. A molybdenum-tungsten-gold deposit in Inner Mongolia is a rare polymetallic deposit mainly composed of molybdenum oxide in China, and there are no reports of such deposits and corresponding beneficiat...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B1/00
CPCB03B7/00B03B1/00
Inventor 张忠汉程新潮胡红喜杨菊应红刚董天颂李风雨杨记平刘晓明
Owner 广东省资源综合利用研究所
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