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A kind of beneficiation method of high calcium carbonate type fluorite ore

A beneficiation method and calcium carbonate technology, applied in flotation, solid separation, etc., can solve the problems of low product quality, low concentrate recovery rate, and few applications, and achieve the effect of improving roughing recovery rate and reducing losses

Active Publication Date: 2016-02-24
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In addition, pre-deliming, stage grinding and grading processes also have the problems of low concentrate recovery rate and low product quality, so these technologies are not widely used.

Method used

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  • A kind of beneficiation method of high calcium carbonate type fluorite ore

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 Shown, the beneficiation method of this high calcium carbonate type fluorite ore, its specific steps are as follows:

[0025] (1) Flotation process: First, grind 1 ton of high calcium carbonate fluorite ore until the particle size is less than 74 μm, accounting for 85%, then add the slurry regulator sodium carbonate, and then add gangue inhibitor acidified water glass after 3 minutes. Add collector sodium oleate after 3 minutes and float for 7 minutes to obtain fluorite rough concentrate, in which high calcium carbonate type fluorite ore includes the following mass percentage components: 39.27% ​​fluorite, 21.35% calcium carbonate, The mass ratio of fluorite to calcium carbonate is 1.83; the dosage of sodium carbonate is 1.5kg sodium carbonate per ton of high calcium carbonate fluorite ore; the dosage of acidified water glass is 2.0kg of acidified water per ton of high calcium carbonate fluorite ore Glass; the dosage of sodium oleate is to add 600g of ...

Embodiment 2

[0030] Such as figure 1 Shown, the beneficiation method of this high calcium carbonate type fluorite ore, its specific steps are as follows:

[0031] (1) Flotation process: First, grind the high calcium carbonate fluorite ore until the particle size is less than 74μm, accounting for 92%, then add the slurry regulator sodium carbonate first, and then acidify the water glass with the gangue inhibitor after 3 minutes, and after 3 minutes After 8 minutes of flotation with collector sodium oleate, fluorite rough concentrate can be obtained, in which high calcium carbonate fluorite ore includes the following components in mass percentage: 35.68% fluorite, 25.62% calcium carbonate, fluorite and The mass ratio of calcium carbonate is 1.39; the amount of sodium carbonate is 2kg of sodium carbonate per ton of high calcium carbonate fluorite ore; acidified water glass is a mixed reagent of acid and water glass with a molar ratio of 1:1, the amount of acidified water glass Add 2.5kg of a...

Embodiment 3

[0036] Such as figure 1 Shown, the beneficiation method of this high calcium carbonate type fluorite ore, its specific steps are as follows:

[0037](1) Flotation process: First, grind the high calcium carbonate type fluorite ore until the particle size is less than 74μm, accounting for 78%, then add the slurry regulator sodium carbonate first, and then acidify the water glass with the gangue inhibitor after 3 minutes, and after 3 minutes After 6 minutes of flotation with collector sodium oleate for 6 minutes, fluorite rough concentrate can be obtained, in which high calcium carbonate type fluorite ore includes the following mass percentage components: 31.49% fluorite, 16.18% calcium carbonate, fluorite and carbonic acid The mass ratio of calcium is 1.95; the dosage of sodium carbonate is to add 1.5kg of sodium carbonate per ton of high calcium carbonate fluorite; the amount of acidified water glass is to add 1.5kg of acidified water glass per ton of high calcium carbonate flu...

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Abstract

The invention relates to a beneficiation method of high calcium carbonate content type fluorite ore and belongs to the field of beneficiation. The beneficiation method comprises the steps of conducting flotation, wherein ore grinding is conducted on the high calcium carbonate content type fluorite ore until the fluorite ore with the granularity smaller than 74 microns accounts for 78%-92% firstly, secondly, sodium carbonate serving as a pulp regulator, acidized sodium silicate serving as a gangue inhibitor and sodium oleate serving as a catching agent are added in sequence, and then a fluorite rough concentrate is obtained; conducting concentration six times, wherein concentration is conducted on the fluorite rough concentrate obtained through the last step six times, acidized sodium silicate serving as a gangue inhibitor and tannin are added in sequence every time concentration is conducted from the third time to the sixth time, and a fluorite concentrate pulp is obtained after concentration is conducted six times; conducting acid leaching, wherein the fluorite concentrate pulp obtained from the last step is concentrated, hydrofluoric acid is added, the fluorite concentrate pulp and the hydrofluoric acid are evenly mixed, leaching is conducted, and a high-grade fluorite concentrate can be obtained after liquid-solid separation. By the adoption of the beneficiation method, the beneficiation effect is good and the recovery rate of fluorite is high.

Description

technical field [0001] The invention relates to a beneficiation method of high calcium carbonate type fluorite ore, which belongs to the technical field of beneficiation. Background technique [0002] Fluorspar is a strategic mineral, and fluorspar deposits of industrial significance are distributed all over the world. Fluorite contains the halogen element fluorine, which is the only raw material for the production of hydrofluoric acid and the main raw material for the production of fluorine-containing compounds. my country is a big country with fluorite resources, but the average content of calcium fluoride in the ore is only 34.7%, and high-grade rich ore only accounts for 2% of the national total. The characteristics of my country's fluorite mineral resources are: there are many single-type fluorite deposits (points), but few reserves; there are few associated (symbiotic) type deposits (points), but large reserves; there are many lean ores and few rich ores; refractory o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/018B03D101/02B03D101/06
Inventor 刘丹
Owner KUNMING UNIV OF SCI & TECH
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