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Beneficiation method for silicate and carbonate type fluorite ores

A beneficiation method and carbonate technology, which is applied in the mineral beneficiation of carbonate type fluorite ore and the field of silicate, can solve the problems of high impurity content and low recovery rate of concentrate products, and achieve easy on-site implementation and control, The effect of reducing the content of silica and calcium carbonate and reducing the cost of beneficiation

Active Publication Date: 2020-09-08
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a mineral processing method for silicate and carbonate type fluorite ore, so as to solve the problems of low recovery rate and high impurity content of concentrate products in existing mineral processing methods

Method used

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  • Beneficiation method for silicate and carbonate type fluorite ores
  • Beneficiation method for silicate and carbonate type fluorite ores

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Effect test

Embodiment 1

[0028] A certain fluorite mine in Gansu has a relatively simple mineral composition. The ore mineral is only fluorite, the gangue mineral is mainly quartz, a small amount of calcite, clay mineral kaolin, etc. Some fluorite (approximately 10%) is mixed with gangue minerals such as quartz, clay minerals, and calcite. The particle size is fine and the intercalation relationship is complicated, making it difficult for the monomer to dissociate. Raw ore (ie, raw ore 1 in Table 1) test ore sample CaF 2 Grade 38.25%, CaCO 3 Grade 6.53%, SiO 2 The grade is 38.52%.

[0029] Step 1. Grinding: Grinding the ore to a particle size of 74μm or less, accounting for 60%;

[0030] Step 2. Rough separation operation: heat the pulp to 20°C, use sulfuric acid (a) as the pH adjuster, the amount of sulfuric acid (a) is 350g / t, and use gangue inhibitor T20( b) Combined with acid water glass (c), the dosage of gangue inhibitor T20(b) is 200g / t, the dosage of acid water glass (c) is 600g / t, and the dosage ...

Embodiment 2

[0043] A fluorite mine in Inner Mongolia has a relatively simple mineral composition, and the useful mineral is fluorite. Gangue minerals are mainly quartz, a small amount of mica, calcite, chlorite, kaolin, etc. Fluorite has a close relationship with quartz inlays, and the two are mainly adjacent and connected, and partly wrapped. Raw ore (ie, raw ore 2 in Table 1) CaF 2 Grade is 35.97%, SiO 2 Grade is 42.67%, CaCO 3 The grade is 8.72%.

[0044] Step 1. Grinding: Grinding the ore to a particle size below 74μm, accounting for 70%;

[0045] Step 2. Rough separation operation: heat the pulp to 25℃, use sulfuric acid as pH adjuster, sulfuric acid (a) dosage is 500g / t, gangue inhibitor T20(b) and gangue inhibitor Combination of acid water glass (c), the dosage of gangue inhibitor T20(b) is 250g / t, the dosage of acid water glass (c) is 800g / t, and the dosage of collector Y-8(d) is 180g / t. Rough separation of fluorite ore, the PH value of the pulp is 7, and the flotation time is 10 mi...

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Abstract

The invention discloses a beneficiation method for silicate and carbonate type fluorite ores, and belongs to the technical field of non-metal ore beneficiation. The problems of low recovery rate and high impurity content of concentrate products in the conventional beneficiation method are solved. The method comprises the following steps of ore grinding; roughing, that is, a gangue inhibitor is a combination of T20 and acidic soluble glass, the collecting agent is Y-8, the gangue inhibitor T20 comprises polyaspartic acid, aluminum sulfate and hydroxyethylidene-1,1-diphosphonic acid in a mass ratio of 3-6: 4: 0.5-1, and the collecting agent Y-8 comprises sodium oleate, 4-epoxytetradecanoic acid and octylphenylpolyethylene glycol in the mass ratio is 6-7: 2-3: 1; scavenging operation, that is, a collecting agent Y-8 is added; regrinding rough concentrate; concentration, that is, an inhibitor T20 and acidic soluble glass are adopted, and Y-8 is adopted as the collecting agent. Under the condition of low temperature, the impurity content in the concentrate product can be effectively reduced, and the fluorite concentrate grade is improved.

Description

Technical field [0001] The invention belongs to the technical field of beneficiation of non-metallic minerals, and specifically relates to a beneficiation method of silicate and carbonate type fluorite ore. Background technique [0002] Fluorite is the most important fluorine-containing industrial raw material, widely used in chemical, metallurgy, building materials, machinery, aviation and other industrial sectors, and is also used as an important high-energy material for emerging industries. my country is rich in fluorite resources, but the reserves of single-type fluorite deposits are small, and the reserves of associated (or symbiotic) fluorite deposits are abundant, and there are many low-grade hard-to-select fluorite ore, and high-grade easy-to-beenable ore is few, especially when the ore contains both When silicate contains carbonate and other gangue minerals, the symbiosis relationship is complicated and their floatability is similar, which increases the difficulty of fluo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B9/00B03D1/018B03D101/02B03D101/06B03D103/04
CPCB03B7/00B03B9/00B03D1/018B03D2201/007B03D2201/02B03D2201/06B03D2203/04
Inventor 刘守信师伟红王奕斐周涛余江鸿黄国贤李飞路军兵高彦萍梁友乾肖胤强张红王玲
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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