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A new type of heating and drug removal process for coarse scheelite concentrate

A technology of coarse concentrate and scheelite, which is applied in the field of new-type scheelite crude concentrate heating and drug removal process, can solve the problems affecting the drug removal effect of gangue minerals, the decline of concentrate grade, and the increase of water glass consumption, etc., to achieve Save mineral processing costs, reduce consumption, and suppress the effect of floating

Active Publication Date: 2022-05-24
洛阳豫鹭矿业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The defects existing in scheelite flotation at present: the whole process of chemical removal of scheelite coarse concentrate is completed in the heating barrel, and the oleic acid desorbed from gangue minerals by water glass floats on the surface of the pulp without being separated, which mainly causes There are two adverse effects: first, the residual oleic acid entering the tungsten beneficiation process will affect the drug removal effect of gangue minerals, resulting in a decline in the concentrate grade; second, the residual oleic acid has a reversible reaction of adsorption and drug removal, which will Increased consumption of water glass in the heating and drug removal section

Method used

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  • A new type of heating and drug removal process for coarse scheelite concentrate
  • A new type of heating and drug removal process for coarse scheelite concentrate
  • A new type of heating and drug removal process for coarse scheelite concentrate

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Effect test

Embodiment 1

[0034] A new type of scheelite rough concentrate heating and drug removal process, according to figure 1 The sorting process shown is processed, including the following steps:

[0035] (1) Take low-grade scheelite, grind it to a particle size of less than 0.074mm, accounting for 55%, and obtain pulp. After adding pH adjuster, inhibitor and collector to the pulp, a coarse two-sweep flotation process is used to obtain coarse Concentrate; wherein, WO in the low-grade scheelite 3 The pH adjusting agent is sodium carbonate, and the amount added in 1 t of raw ore is 1200 g; the inhibitor is water glass, and the added amount in 1 t of raw ore is 600 g; the collector is sodium fatty acid, One or more of oxidized paraffin and hydroxamic acid, and the added amount in 1t of raw ore is 160g;

[0036] (2) The rough concentrate in step (1) is lifted to the 1# thickener for concentration, the underflow slurry is discharged into the heating barrel, the supernatant overflow enters the 2# thi...

Embodiment 2

[0042] A new type of scheelite rough concentrate heating and drug removal process, according to figure 1 The sorting process shown is processed, including the following steps:

[0043] (1) Take low-grade scheelite, grind it to a particle size below 0.074mm, which accounts for 60%, and obtain pulp. After adding pH adjuster, inhibitor and collector to the pulp, a coarse two-sweep flotation process is used to obtain coarse Concentrate; wherein, WO in the low-grade scheelite 3The pH adjusting agent is sodium carbonate, and the added amount in 1 t of raw ore is 1500 g; the inhibitor is water glass, and the added amount in 1 t of raw ore is 800 g; the collector is sodium fatty acid, One or more of oxidized paraffin and hydroxamic acid, and the amount added in 1t of raw ore is 200g;

[0044] (2) The rough concentrate in step (1) is lifted to the 1# thickener for concentration, the underflow slurry is discharged into the heating barrel, the supernatant overflow enters the 2# thicken...

Embodiment 3

[0050] A new type of scheelite rough concentrate heating and drug removal process, according to figure 1 The sorting process shown is processed, including the following steps:

[0051] (1) Take low-grade scheelite and grind it to a particle size below 0.074mm, which accounts for 65%, to obtain pulp. After adding pH adjuster, inhibitor and collector to the pulp, a coarse two-sweep flotation process is used to obtain coarse Concentrate; wherein, WO in the low-grade scheelite 3 The pH adjusting agent is sodium carbonate, and the amount added in 1 t of raw ore is 1800 g; the inhibitor is water glass, and the added amount in 1 t of raw ore is 1000 g; the collector is sodium fatty acid, One or more of oxidized paraffin and hydroxamic acid, and the added amount in 1t of raw ore is 240g;

[0052] (2) The rough concentrate in step (1) is lifted to the 1# thickener for concentration, the underflow slurry is discharged into the heating barrel, the supernatant overflow enters the 2# thi...

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Abstract

A new type of heating and chemical removal process for scheelite coarse concentrate, including the following steps: low-grade scheelite ore is crushed and ground to obtain ore pulp, and scheelite coarse concentrate is obtained through a rough and double-sweep flotation process. Concentration and underflow discharge into the heating barrel, steam is added to heat, water glass is injected through the bottom, the temperature continues to rise, keep stirring vigorously and keep warm, then stand still, the upper layer of grease is drawn out, and enters the scheelite roughing process; In the tungsten beneficiation process, the tungsten concentrate is obtained through one rough, two fine and three sweeps. The process of the present invention reduces the residual sodium oleate content in the tungsten beneficiation process by extracting the sodium oleate in the rough concentrate and entering the tungsten roughing process, saves the amount of sodium oleate in the roughing section, and realizes low-grade Efficient recovery of scheelite; also by injecting water glass on the surface of the slurry into water glass at the bottom, it promotes the diffusion and fusion of water glass and gangue minerals, improves the suppression effect of gangue minerals, and reduces the consumption of water glass.

Description

technical field [0001] The invention relates to the technical field of beneficiation technology, and more particularly, to a novel heating and drug removal process for scheelite rough concentrate. Background technique [0002] China's tungsten reserves ranks first in the world, and scheelite reserves account for 70.4% of China's tungsten reserves, of which 81.1% of the ore has a WO3 grade of less than 0.4%, which is a low-grade scheelite. Due to the complex composition of low-grade scheelite and the finer embedded particle size, it is difficult to recycle low-grade scheelite. At present, most domestic scheelite processing plants mainly use the two-stage flotation method, that is, the coarse concentrate is obtained through pre-selection first, and the concentrate is obtained after the coarse concentrate is concentrated and selected by the "Petrove method". The essence of the "Petrov method" is to add appropriate amount of water glass to the thick slurry under the condition o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/00
CPCB03B9/00
Inventor 周敬闽张高杰李凤荣张丹丹
Owner 洛阳豫鹭矿业有限责任公司