Ore-dressing method for recovering nickel from ore-washing slurry of copper-nickel sulfide ore

A copper-nickel sulfide and mineral processing technology, which is applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problems of low metal recovery rate, uneven particle size, low pulp concentration, etc., and achieves high comprehensive recovery rate, high The effect of low production cost and advanced technology

Active Publication Date: 2011-10-26
JILIN JIEN NICKEL IND
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Problems solved by technology

With the above-mentioned beneficiation process, the metal recovery rate is low, the concentrate grade is not high, and the ore outlet of the concentration equipment such as the thickener is easily blocked, resulting in unstable process operation
Because copper-nickel sulfide ores are mostly pyrrhotite, pentlandite, pentlandite and nickel-containing pyrrhotite, and are

Method used

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  • Ore-dressing method for recovering nickel from ore-washing slurry of copper-nickel sulfide ore
  • Ore-dressing method for recovering nickel from ore-washing slurry of copper-nickel sulfide ore

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Embodiment Construction

[0019] The present invention will be further described below using the accompanying drawings and specific examples.

[0020] refer to figure 1 , a kind of beneficiation method that recovers metal from non-ferrous metal washing ore pulp comprises the following steps in sequence:

[0021] Ore washing pulp re-election process 1, through the φ219mm pipeline, the ore washing pulp in the crushing workshop is transported to 11 BL-1500B spiral chutes by gravity, and the nickel minerals in the ore washing pulp in the crushing workshop are classified according to density by using the spiral chute , carry out desliming and dehydration, so that the ore in the slurry is separated from the ore, and the obtained gravity concentrate is the ore product, the nickel grade is ≥ 1%, and the copper grade is ≥ 0.3%;

[0022] Ore storage and dehydration process 2, the ore fed in process 1 is naturally dehydrated and stored in the stacked ore storage bin, the purpose is to store a sufficient amount o...

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Abstract

The invention provides an ore-dressing method for recovering nickel from ore-washing slurry of copper-nickel sulfide ore. The method comprises the following steps: performing a gravity concentration process on the ore-washing slurry; storing and dewatering the ore sand of the gravity concentrate; performing an open-circuit grinding process; performing a main program check screening process; performing a closed-circuit grinding process on unqualified grains; adding drugs in qualified grains and then performing a flotation process, wherein after performing the processes of coarse selecting, scavenging and finely selecting, the nickel concentrate grade is 6%-8%, the copper grade is 1%-1.6%, the grade of nickel in tailings is less than or equal to 0.2%, and the grade of copper in tailings is less than or equal to 0.04%; and then concentrating and dewatering the gravity concentrate tailings by using a concentrating machine; performing a slurry flotation process; adding a dispersing agent after adjusting the slurry with high concentration; and adding an ore-dressing reagent in stage adding manner, wherein the nickel concentrate grade is 4%-7% and the copper grade is 0.8%-1.5%. The ore-dressing method has the advantages of low cost, high production efficiency and high comprehensive recovery rate of valuable metal. The ore-dressing method is an ideal ore-dressing method for recoveringnickel from ore-washing slurry of copper-nickel ore.

Description

technical field [0001] The invention relates to a beneficiation method for recovering metal from non-ferrous metal washing pulp, which is suitable for extracting metal from copper sulfide ore, nickel sulfide ore and copper sulfide and nickel associated ore washing pulp. Background technique [0002] At present, the known method to reduce the impact of ore slime on non-ferrous metal ore beneficiation is to wash the ore. The ore pulp discharged from ore washing is rich in a large amount of metal resources. In copper-nickel sulfide ore, in addition to nickel and copper, it is also accompanied by cobalt, platinum, palladium, gold, silver and other rare elements. The metal recovery of non-ferrous metal ore washing pulp usually uses a thickener to concentrate the pulp to store ore and increase the concentration. The underflow of the thickener is transported to a hydrocyclone or a spiral classifier for inspection and classification. Mechanical closed circuit grinding, add dispersa...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/00
Inventor 李景峰耿隽嵩刘玉江冯立伟刘绪光孙英崔商哲
Owner JILIN JIEN NICKEL IND
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