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High-efficiency ore sorting technique for nickel-molybdenum mineral

A nickel-molybdenum ore, high-efficiency technology, applied in the field of high-efficiency beneficiation of nickel-molybdenum ore in complex and refractory black rock series, can solve the problems of difficulty in removing organic carbon, low recovery rate, and low-grade recovered products, and achieve the goal of solving the problem of organic carbon remove difficult effects

Inactive Publication Date: 2008-09-10
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for effectively removing organic carbon and recovering nickel-molybdenum ore through high-efficiency flotation for the problems of difficulty in removing organic carbon in nickel-molybdenum ore, low taste and low recovery rate of products recovered by existing beneficiation technology technology

Method used

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  • High-efficiency ore sorting technique for nickel-molybdenum mineral

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: heat treatment decarburization flotation

[0023] Refractory black rock nickel-molybdenum ore containing 0.8% and 0.5% Ni and 0.5% respectively in the original ore, grind to -0.074mm to account for 85%, add fresh water until the pulp concentration is 30%, heat to 100°C and cook for 20 minutes , after standing for 20 minutes, remove the supernatant. Concentrate the pulp to 30%, add 100 g / t sodium hexametaphosphate as dispersion, 2000 g / t lime to suppress nickel and molybdenum, add 500 g / t kerosene as collector, 60 g / t 2# oil as foaming agent , Flotation decarbonization with an inflatable flotation machine. Add 800 g / t oxalic acid listed activator and 500 g / t sodium sulfide as activator, use 700 g / t emulsified kerosene and 280 g / t pentaxanthate to collect nickel-molybdenum ore by flotation, after a rough separation The small-scale closed-circuit test of secondary scavenging can obtain nickel-molybdenum mixed concentrate with Ni and Mo grades greater than 5...

Embodiment 2

[0025] Strong ultrasonic pretreatment decarburization flotation

[0026] The original ore contains 0.8% Ni and 0.5% Mo respectively for refractory black rock series nickel-molybdenum ore. Grinding to -0.074mm accounts for 85%. Add fresh water until the pulp concentration is 30%. 10W / cm 2 1. The power is 400w high-intensity ultrasonic treatment for 20 minutes, and the supernatant is extracted after standing for 8 minutes. Concentrate the pulp to 30%, add 100 g / t sodium hexametaphosphate as dispersion, 2000 g / t lime to suppress nickel and molybdenum, add 500 g / t kerosene as collector, add 60 g / t 2# oil as foam agent, decarbonized by flotation with an inflatable flotation machine. Add 800g / ton of oxalic acid and 500g / ton of sodium sulfide as activators, add 700g / ton of emulsified kerosene and 280g / ton of pentaxanthate to collect nickel-molybdenum ore by flotation. The closed-circuit test can obtain nickel-molybdenum mixed concentrate with Ni and Mo grades of 5.68% and 7.88% re...

Embodiment 3

[0028] Microwave pretreatment decarburization flotation

[0029] The original ore contains 0.8% and 0.5% Ni and Mo respectively, refractory black rock series nickel-molybdenum ore, crushed to -0.074mm to account for 85%, add fresh water to the pulp concentration of 30%, and place it at a frequency of 2450MHz and a power of Treat in 2000w microwave for 10 minutes, stand still for 10 minutes and then remove the supernatant. Concentrate the pulp to 30%, add 100 g / t sodium hexametaphosphate as dispersion, 2000 g / t lime to suppress nickel and molybdenum, 500 g / t kerosene as collector, 60 g / t 2# oil as foaming agent, Flotation decarbonization with inflatable flotation machine. Add 800g / ton of oxalic acid and 500g / ton of sodium sulfide as activators, use 700g / ton of emulsified kerosene and 280g / ton of pentaxanthate to collect nickel-molybdenum ore by flotation. The closed-circuit test can obtain nickel-molybdenum mixed concentrate with Ni and Mo grades of 6.52% and 7.95% respective...

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Abstract

The invention provides a high-efficiency beneficiation technology of NiMo minerals. The technical proposal of the invention is that: a strong physical field is introduced to preprocess and decarbonize minerals, such as a thermodynamic field, an intense ultrasonic wave field or a microwave field, etc., and after adding high-efficiency activating agents to activating Ni and Mo, kerosene or xanthate is used for collection. 0.5 to 2 percent of low grade NiMo minerals are processed by the technology of the invention to obtain NiMo mixed concentrate with the NiMo grade of 5 to 8 percent and a recovery rate of more than 75 percent, which fully satisfies the requirement of metallurgical materials in a united flow of the beneficiation and metallurgy, thus providing a new way for NiMo mineral resources in China refractory black rock series.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a high-efficiency mineral processing technology of nickel-molybdenum ore in complex refractory black rock series. Background technique [0002] Nickel-molybdenum ore is widely distributed in Guizhou, Hunan, Hubei and other places. The metallogenic belt is 180km long and 40km wide, with amazing reserves. The exploration results of the Hunan Nonferrous Geological Survey Bureau show that only the Zhangjiajie area of ​​Hunan Province has 3 million tons of nickel reserves and about 2 million tons of molybdenum reserves. The ore is a special polymetallic complex ore resource, containing rare and precious metals such as Ni, Mo, V, W, etc., rich gold, silver, platinum group metals and rare earth metals. The composition and structure of this kind of resources are special. Nickel and molybdenum in nickel-molybdenum ore mainly occur in a kind of amorphous carbonaceo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/004B03D1/002B03B1/00B03B1/04B03D101/02B03D101/04B03D101/06B03D103/04
Inventor 孙伟胡岳华邓美姣
Owner CENT SOUTH UNIV
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