Method for recycling calcium-rich pyrochlore from weathered high-mud carbonate type niobium polymetallic ore

A carbonate type, polymetallic ore technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problem of lack of separation process of calcium-rich pyrochlore, unrecoverable pyrochlore, and recovery rate. low problems, to achieve the effect of high grade, high recovery rate and strong adaptability

Active Publication Date: 2019-11-05
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the lack of a reasonable sorting process for calcium-rich pyrochlore in weathered high-mud carbonate pyrochlore mines, the pyrochlore cannot be recycled, or the defects of extremely low recovery rate and Insufficient to provide a method for recovering calcium-rich pyrochlore from weathered high-mud carbonate-type niobium polymetallic ore

Method used

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  • Method for recycling calcium-rich pyrochlore from weathered high-mud carbonate type niobium polymetallic ore
  • Method for recycling calcium-rich pyrochlore from weathered high-mud carbonate type niobium polymetallic ore
  • Method for recycling calcium-rich pyrochlore from weathered high-mud carbonate type niobium polymetallic ore

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Experimental program
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Effect test

Embodiment 1

[0031] A method for recovering calcium-rich pyrochlore from weathered high-mud carbonate-type niobium polymetallic ore, comprising the steps of:

[0032] S1. Raw ore grinding to -0.5mm accounts for 92%;

[0033] S2. Add water to the product after grinding to adjust the pulp concentration to 25%, stir and scrub for 10 minutes, and carry out spiral gravity separation in the spiral chute to obtain coarse concentrate and spiral tailings;

[0034] S3. Regrind the coarse concentrate to -0.074mm to account for 70%, add water to adjust the slurry to a pulp concentration of 30%, add floating phosphorus reagents, and perform apatite flotation to obtain phosphorus concentrate and floating phosphorus tailings;

[0035] S4. Concentrate the floating phosphorus tailings to a slurry concentration of 30%, add floating niobium reagents to the floating phosphorus tailings, and perform niobium flotation, niobium concentrate and floating niobium tailings.

[0036] See Table 1 for the phosphorus f...

Embodiment 2

[0038] A method for recovering calcium-rich pyrochlore from weathered high-mud carbonate-type niobium polymetallic ore, comprising the steps of:

[0039] S1. Raw ore grinding to -0.5mm accounts for 96%;

[0040] S2. Add water to the ground product to adjust the pulp concentration to 35%, stir and scrub for 8 minutes, and perform spiral gravity separation in the spiral chute to obtain coarse concentrate and spiral tailings;

[0041] S3. Regrind the coarse concentrate to -0.074mm to account for 85%, add water to adjust the slurry to a pulp concentration of 25%, add floating phosphorus reagents, and perform apatite flotation to obtain phosphorus concentrate and floating phosphorus tailings;

[0042] S4. Concentrate the floating phosphorus tailings to a pulp concentration of 35%, add floating niobium reagents to the floating phosphorus tailings, and perform niobium flotation, niobium concentrate and floating niobium tailings.

[0043] See Table 1 for the phosphorus flotation agen...

Embodiment 3

[0045] A method for recovering calcium-rich pyrochlore from weathered high-mud carbonate-type niobium polymetallic ore, comprising the steps of:

[0046] S1. Raw ore grinding to -0.5mm accounts for 90%;

[0047] S2. Add water to the product after grinding to adjust the pulp concentration to 20%, stir and scrub for 5 minutes, and carry out spiral gravity separation in the spiral chute to obtain coarse concentrate and spiral tailings;

[0048] S3. Regrind the coarse concentrate to -0.074mm to account for 55%, add water to adjust the slurry to a pulp concentration of 35%, add floating phosphorus reagents, and perform apatite flotation to obtain phosphorus concentrate and floating phosphorus tailings;

[0049] S4. Concentrate the floating phosphorus tailings to a slurry concentration of 25%, add floating niobium reagents to the floating phosphorus tailings, and perform niobium flotation, niobium concentrate and floating niobium tailings.

[0050] See Table 1 for the phosphorus fl...

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Abstract

The invention discloses a method for recycling calcium-rich pyrochlore from weathered high-mud carbonate type niobium polymetallic ore. The method comprises the following steps: at first, stirring andscrubbing are adopted to fall off fine silt adhered to the surface of mineral, spiral tailing discarding and desliming are then adopted to obtain rough concentrate, ore grinding flotation is carriedout on the rough concentrate to obtain phosphorus concentrate, floating phosphorus tailing is adopted to carry out flotation on the calcium-rich pyrochlore to obtain niobium concentrate, and recyclingphosphorus in the niobium concentrate at the same time. According to the method, the technological process combining reselection, reverse flotation and direct flotation is adopted, reverse flotationis adopted to recycle apatite to obtain phosphorus concentrate, direct flotation is adopted to recycle calcium-rich pyrochlore to obtain the niobium concentrate product, the adaptability is high, andthe obtained niobium concentrate is higher in grade and recovery rate. Spiral reselection realizes separation of niobium mineral, iron mineral, phosphorus mineral and low-density gangue, reaches the desliming effect and obtains niobium, iron and phosphorus rough concentrate with higher grade; and reverse flotation effectively removes apatite to prevent apatite from interfering with the direct flotation pyrochlore, and the phosphorus concentrate product is obtained at the same time.

Description

technical field [0001] The invention relates to the technical field of mineral processing, and more specifically relates to a method for recovering calcium-rich pyrochlore from weathered high-mud carbonate-type niobium polymetallic ore. Background technique [0002] Niobium is a rare refractory metal widely used in steel, aerospace and other fields. my country is a typical niobium-poor country, and more than 90% of niobium resources are imported. 95% of the global niobium supply comes from pyrochlore. However, my country's niobium resources are mainly ferroniobium ore and niobium-iron rutile, and pyrochlore-based ores have not been found in my country. Therefore, domestic pyrochlore Quarry studies are extremely rare. The reserves of carbonate-type pyrochlore ore resources are very huge, widely distributed in Africa, South America and other regions. This kind of ore has the characteristics of high iron, high mud and high phosphorus, which is difficult to sort. It has long la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00B03B7/00
CPCB03B7/00B03B9/00
Inventor 邹坚坚胡真邱显扬李汉文付华汪泰李沛伦王成行丘世澄杨凯志姚艳清李强冉金城时晗
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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