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Novel scheelite rough concentrate heating reagent removing process

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: 2021-01-15
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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  • Novel scheelite rough concentrate heating reagent removing process
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  • Novel scheelite rough concentrate heating reagent removing process

Examples

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Comparison scheme
Effect test

Embodiment 1

[0034] A new type of scheelite crude concentrate heating and drug removal process, according to figure 1 Shown sorting process is processed, comprises the following steps:

[0035] (1) Take low-grade scheelite, grind it to a particle size below 0.074mm to account for 55%, and obtain a pulp. After adding pH regulators, inhibitors and collectors to the pulp, it undergoes a rough and double-sweep flotation process to obtain a coarse Concentrate; wherein, the WO in the low-grade scheelite 3 The content of the pH regulator is 0.0473%; the pH adjusting agent is sodium carbonate, and the addition amount in 1t of raw ore is 1200g; The inhibitor is water glass, and the addition amount in 1t of raw ore is 600g; Described collector is fatty acid sodium, One or more of oxidized paraffin and hydroxamic acid, the amount added to 1t of raw ore is 160g;

[0036] (2) Lift the coarse concentrate in step (1) to the 1# thickener for thickening, the underflow pulp is discharged into the heating ...

Embodiment 2

[0042] A new type of scheelite crude concentrate heating and drug removal process, according to figure 1 Shown sorting process is processed, comprises the following steps:

[0043] (1) Take low-grade scheelite, grind it to a particle size below 0.074mm and account for 60% of the pulp, and then add pH regulators, inhibitors and collectors to the pulp, and go through a rough and double-sweep flotation process to get coarse Concentrate; wherein, the WO in the low-grade scheelite 3The content of the pH regulator is 0.0473%; the pH regulator is sodium carbonate, and the amount added in 1t of raw ore is 1500g; the inhibitor is water glass, and the amount added in 1t of raw ore is 800g; the collector is sodium fatty acid, One or more of oxidized paraffin and hydroxamic acid, the amount added to 1t of raw ore is 200g;

[0044] (2) Lift the coarse concentrate in step (1) to the 1# thickener for thickening, the underflow pulp is discharged into the heating barrel, and the supernatant ...

Embodiment 3

[0050] A new type of scheelite crude concentrate heating and drug removal process, according to figure 1 Shown sorting process is processed, comprises the following steps:

[0051] (1) Take low-grade scheelite, grind it to a particle size below 0.074mm, accounting for 65%, and obtain a pulp. After adding pH regulators, inhibitors and collectors to the pulp, go through a rough and double-sweep flotation process to get coarse Concentrate; wherein, the WO in the low-grade scheelite 3 The content of the pH adjusting agent is 0.0473%; the pH adjusting agent is sodium carbonate, and the addition amount in 1t of raw ore is 1800g; The inhibitor is water glass, and the addition amount in 1t of raw ore is 1000g; Described collector is fatty acid sodium, One or more of oxidized paraffin and hydroxamic acid, the amount added to 1t of raw ore is 240g;

[0052] (2) Lift the coarse concentrate in step (1) to the 1# thickener for thickening, the underflow pulp is discharged into the heating...

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Abstract

The invention discloses a novel scheelite rough concentrate heating reagent removing process. The process comprises the following steps that low-grade scheelite is subjected to ore crushing and ore grinding to obtain ore pulp, scheelite rough concentrate is obtained through one-time roughing two-time scavenging flotation process, the rough concentrate is concentrated, underflow is discharged intoa heating barrel, steam is introduced for heating, water glass is injected from the bottom, the temperature is continuously raised, strong stirring is kept, standing is conducted after heat preservation, upper-layer grease is pumped out, and a scheelite roughing process is started; and the ore pulp below the heating barrel enters a tungsten concentration process, and tungsten concentrate is obtained through one-time roughing, two-time concentration and three-time scavenging. According to the process, sodium oleate in the rough concentrate is extracted and the tungsten roughing process is started, so that the content of the residual sodium oleate in the tungsten concentration process is reduced, the consumption of the sodium oleate in a roughing section is reduced, and the efficient recovery of the low-grade scheelite is realized; and the water glass is injected into the bottom instead of the surface of the ore pulp, so that the diffusion fusion of the water glass and gangue minerals ispromoted, the inhibition effect of the gangue minerals is improved, and the consumption of water glass is reduced.

Description

technical field [0001] The invention relates to the technical field of beneficiation technology, and more specifically, relates to a novel heating and drug removal process of rough scheelite concentrate. Background technique [0002] China's tungsten reserves rank first in the world, and scheelite reserves account for 70.4% of China's tungsten reserves, of which 81.1% of the ore WO3 grade is less than 0.4%, which belongs to low-grade scheelite. Due to the complex components of low-grade scheelite and the fine particle size of embedded distribution, it is difficult to recycle low-grade scheelite. At present, the recovery method of most domestic scheelite concentrators mainly adopts the two-stage flotation method, that is, the rough concentrate is obtained through pre-selection, and the rough concentrate is concentrated by the "Petrov method" to obtain the concentrate. The essence of the "Petrov method" is to add an appropriate amount of water glass to the thick slurry under ...

Claims

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Application Information

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Patent Type & Authority Applications(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