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Process for recycling bismuth concentrate from tungsten ore magnetic separation tailings

A technology for magnetic separation of tailings and bismuth concentrate, which is applied in flotation, solid separation and other directions, can solve the problems of insufficient technological process, insufficient grade and recovery rate of bismuth concentrate, and can improve the degree of monomer dissociation and widen the recovery. The effect of a wide range of routes and raw materials

Active Publication Date: 2012-11-28
JIANGXI RARE EARTH & RARE METALS TUNGSTEN GRP HLDG CO LTD
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Problems solved by technology

[0009] "China Tungsten Industry" 2001, Volume 16, No. 1, disclosed the inventor's own academic paper: "Production Practice of Flotation Bubble Bismuth Ore from Wolfram Magnetic Separation Tailings" (comparison document 1), but at that time The technology is only applicable to black tungsten magnetic separation tailings; in addition, the technological process is not perfect, the operating conditions such as the type and quantity of mineral processing agents need to continue to find the most suitable, the grade and recovery rate of bismuth concentrate are not high enough, etc.

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  • Process for recycling bismuth concentrate from tungsten ore magnetic separation tailings

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Embodiment Construction

[0035] Such as figure 1 As shown, according to the process of reclaiming bismuth concentrate from tungsten ore magnetic separation tailings according to the present invention, take tungsten ore magnetic separation tailings as raw material, and the main steps include:

[0036] 1. Classification (grinding) process

[0037] From the tungsten ore magnetic separation workshop, the magnetic separation tailings are transferred by driving, transported by car to the raw material warehouse 101 of the flotation workshop, and the raw materials are sent to the high-frequency vibrating screen 103 for classification by the vibrating ore feeding machine 102, and the 0.2mm undersize 104 is a qualified particle size, which is sent to the sodium sulfide soaking tank 105, and the +0.2mm oversize 106 is sent to the ore grinding machine 107, and is returned to the high-frequency vibrating screen 103 by the sand pump 108 after being ground.

[0038] In particular, from the measurement results of th...

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Abstract

The invention relates to a process for recycling a bismuth concentrate from tungsten ore magnetic separation tailings. The bismuth concentrate of high grade is obtained with the tungsten ore magnetic separation tailings as a raw material through a classification step, a sodium sulfide dipping step and a floatation step and can be directly utilized as a raw material for smelting and producing a bismuth ingot. The process for recycling the bismuth concentrate from the tungsten ore magnetic separation tailings widens the recycling way of the bismuth in a byproduct, optimizes the process course, solves the problem of difficult processing of the tungsten ore magnetic separation tailings, recycles concomitant bismuth minerals in the tungsten ore magnetic separation tailings and effectively utilizes mineral resources.

Description

technical field [0001] The invention relates to a process for recovering bismuth minerals, in particular to a process for recovering bismuth concentrate from tungsten ore magnetic separation tailings. [0002] In this patent specification, the term "tungsten ore magnetic separation tailings" refers to the general term for the tailings produced in the process of recovering tungsten concentrate from tungsten ore magnetic separation. [0003] The term "bismuth mineral" is a bismuth-containing mineral. [0004] The term "bismuth concentrate" refers to bismuth minerals containing more than 50% bismuth. [0005] The term "bismuth ingot" refers to the bismuth product with the brand name Bi9999 in GB / T 915-1984. [0006] The molecular formula of the term "bismuthite" is Bi 2 o 3 CO 3 ·H 2 O. [0007] The term "sulfurization" refers to the process of forming a sulfide film on the surface of minerals after they are soaked in sodium sulfide solution for a period of time. Backgro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/00C22B30/06B03B1/00B03B1/04B03D1/00
Inventor 易贤荣
Owner JIANGXI RARE EARTH & RARE METALS TUNGSTEN GRP HLDG CO LTD
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