Gravity separation and flotation separation combined process for treatment of complex tungsten-molybdenum-copper-lead-zinc polymetallic ores
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A polymetallic ore and combined process technology, applied in flotation, solid separation, wet separation, etc., can solve problems such as low recovery rate, difficult recovery of galena and wolframite, and difficult separation of valuable metal minerals. To achieve the effect of improving resource utilization
Active Publication Date: 2017-11-21
有研资源环境技术研究院(北京)有限公司
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The disadvantages of the traditional process are one-time fine grinding, difficult recovery of galena and wolframite that are easy to over-grind, difficult separation of valuable metal minerals, high impurity content in concentrate, and low recovery rate
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Embodiment 1
[0023] In a certain ore body in Liaoning, the ore contains 0.55% tungsten, 0.052% molybdenum, 1.12% lead, 1.52% zinc, and 0.40% copper. Other minerals are mainly pyrite, quartz, feldspar and kaolin.
[0024] Step I: the ore is ground to -0.074mm 70%; the equipment used for gravity separation is a shaking table; the medicament used for lead flotation is sodium diethylaminodithioformate and pinitol oil, and the consumption is respectively 30g / (t raw ore) and 15g / (t raw ore); the number of times of lead selection is 3 times, and the lead middle ore returns in sequence to obtain the final lead concentrate and tungsten concentrate;
[0025] Step II: The gravity separation tailings are no longer ground, and then the copper-molybdenum mixed concentrate is obtained by using kerosene and sulfur carbamate to obtain a copper-molybdenum mixed coarse concentrate, which is obtained after 4 times of beneficiation. Molybdenum mixed concentrate is re-grinded, the grinding fineness is -0.045mm...
Embodiment 2
[0029] In an ore body in Inner Mongolia, the ore contains 0.60% tungsten, 0.07% molybdenum, 1.5% lead, 1.8% zinc, and 0.50% copper. Other minerals are mainly pyrite, quartz, feldspar and kaolin.
[0030] Step I: the ore is ground to -0.074mm 50%; the equipment used for gravity separation is a shaking table; the medicament used for lead flotation is sodium diethylaminodithioformate and pinitol oil, and the consumption is respectively 25g / (t raw ore) and 10g / (t raw ore); the number of times of lead selection is 3 times, and the lead middle ore returns in sequence to obtain the final lead concentrate and tungsten concentrate;
[0031] Step II: Regrind the gravity separation tailings to -0.074mm 90%, then use kerosene and sulfur carbamate for copper-molybdenum mixed separation to obtain copper-molybdenum mixed coarse concentrate, and obtain copper-molybdenum after 4 times of separation Mixed concentrate, copper-molybdenum mixed concentrate is re-grinded, the grinding fineness is ...
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Abstract
The invention discloses a gravity separation and flotation separation combined process for treatment of complex tungsten-molybdenum-copper-lead-zinc polymetallic ores. The gravity separation and flotation separation combined process comprises the following steps: (1) performing grinding-gravity separation on raw ores to obtain lead tungstate rough concentrate enriched in wolframite and gelenite and gravity separation tailings; (2) performing lead flotation on the lead tungstate rough concentrate to obtain lead rough concentrate and tungsten concentrate, and further performing lead concentration on the lead rough concentrate to obtain lead concentrate; (3) performing copper-molybdenum mix-floatation on the gravity separation tailings to obtain copper-molybdenum mixed crude concentrate and copper-molybdenum mix-floatation tailings; (4) performing copper-molybdenum mixed concentration on the copper-molybdenum mixed crude concentrate to obtain copper-molybdenum bulk concentrate, and further performing copper-molybdenum separation-rough concentration and copper-molybdenum separation-concentration on the copper-molybdenum bulk concentrate to obtain copper concentrate and molybdenum concentrate; and (5) sequentially performing zinc rough concentration and zinc concentration on the copper-molybdenum mix-floatation tailings to obtain zinc concentrate. With the adoption of the gravity separation and flotation separation combined process provided by the invention, valuable elements in the complex tungsten-molybdenum-copper-lead-zinc polymetallic ores can be fully recycled, and the resource utilization rate of the complex tungsten-molybdenum-copper-lead-zinc polymetallic ores is improved.
Description
technical field [0001] The invention relates to a combined heavy flotation process for processing complex tungsten-molybdenum-copper-lead-zinc polymetallic ore. Background technique [0002] Polymetallic sulfide ores containing tungsten, molybdenum, copper, lead, and zinc have many components and low grades. Wolframite and galena with high specific gravity are brittle and easy to be crushed. Difficulty separating. The sorting of such ores at home and abroad often adopts the process of preferentially selecting molybdenum, copper and lead mixed selection, then zinc, and flotation tailings to separate tungsten. The process flow is as follows: figure 2 shown. The disadvantages of the traditional process are one-time fine grinding, difficult recovery of easily over-ground galena and wolframite, difficult separation of valuable metal minerals, high impurity content in the concentrate, and low recovery rate. Contents of the invention [0003] In view of the defects existing in...
Claims
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