Substep ore grinding reverse-reverse direct flotation process for treating silico-calcium collophanite

A technology of collophosite and silicon-calcium, which is applied in the field of step-by-step grinding and reverse-reverse flotation technology, which can solve the problems of fine grinding fineness of raw ore, poor sorting performance, and low sorting performance, so as to reduce the cost of grinding , reduce energy consumption, improve the effect of sorting efficiency

Active Publication Date: 2017-02-22
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, for low-grade calcareous colloidal phosphate rock, there are mainly three flotation processes: forward-reverse flotation process, reverse-direct flotation process, and double reverse flotation process. Among them, the forward and reverse flotation process and the reverse flotation process It has good adaptability to siliceous calcareous collophosite, but it has the disadvantages of fine grinding fineness of raw ore, serious over-grinding phenomenon, and high energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1, a step-grinding reverse flotation process for processing silicocalcium collophane: the process flow is a step-grinding reverse-floatation process, using segmented grinding, the first stage of grinding When -0.074mm accounts for 50%, the double reverse flotation process is adopted. The first stage of reverse flotation removes most of the carbonate minerals in the original ore, and the second stage of reverse flotation mainly removes most of the quartz minerals in the original ore; The obtained coarse concentrate is screened, the screened product is fed to the positive flotation concentration operation or used as the ore blending of the positive flotation concentrate, the under-screened product is fed to the second stage grinding operation, and the second stage grinding The fineness is -0.074mm, which accounts for 80%; the flotation slurry is fed into the positive flotation process to remove most of the silicate minerals.

Example Embodiment

[0032] Example 2, a step-grinding reverse flotation process for treating silicocalcite collophane: the process flow is a step-grinding reverse-floatation process, using segmented grinding, the first stage of grinding When -0.074mm accounts for 70%, the double reverse flotation process is adopted. The first stage of reverse flotation removes most of the carbonate minerals in the original ore, and the second stage of reverse flotation mainly removes most of the quartz minerals in the original ore; The obtained coarse concentrate is screened, the screened product is fed to the positive flotation concentration operation or used as the ore blending of the positive flotation concentrate, the under-screened product is fed to the second stage grinding operation, and the second stage grinding The fineness is -0.074mm, accounting for 95%; the flotation slurry is fed into the positive flotation process to remove most of the silicate minerals.

Example Embodiment

[0033] Example 3, a step-by-step grinding reverse flotation process for treating siliceous calcareous collophane: the process flow is a step-by-step grinding reverse flotation process, using segmented grinding, the first stage of grinding When -0.074mm accounts for 60%, the double reverse flotation process is adopted. The first stage of reverse flotation removes most of the carbonate minerals in the original ore, and the second stage of reverse flotation mainly removes most of the quartz minerals in the original ore; The obtained coarse concentrate is screened, the screened product is fed to the positive flotation concentration operation or used as the ore blending of the positive flotation concentrate, the under-screened product is fed to the second stage grinding operation, and the second stage grinding The fineness is -0.074mm, accounting for 85%; the flotation slurry is fed into the positive flotation process to remove most of the silicate minerals.

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PUM

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Abstract

The invention discloses a substep ore grinding reverse-reverse direct flotation process for treating silico-calcium collophanite. The technological process is the substep ore grinding reverse-reverse direct flotation process, stage ore grinding is adopted, ore is ground into -0.074 mm in the first stage, a double reverse flotation process is adopted when the ore accounts for 50% to 70%, most of carbonate minerals of the raw ore are removed during first-stage reverse flotation, and most of quartz minerals of the raw ore are mainly removed during second-stage reverse flotation; the obtained rough concentrate is screened, oversized products are subjected to direct flotation fine selecting operation or used as blending ore of direct flotation concentrate, undersized products are subjected to second-stage ore grinding operation, the ore is ground in the second stage till the ore with the fineness of -0.074 mm accounts for 80% to 95%; flotation pulp gets into the direct flotation process, and most of silicate minerals in the flotation pulp are removed. The process mainly aims at the low-grade silico-calcium collophanite, especially silicon containing minerals are the quartz and aluminosilicate minerals, and the advantages of being stable in mineral processing flowsheet, good in separation effect, low in energy consumption and the like are achieved.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, in particular to a step-by-step grinding and reverse-reverse flotation process for processing siliceous-calcareous colloidal phosphate rock. [0002] Background technique: [0003] In my country, phosphate rock resources are mainly concentrated in Yunnan, Guizhou, Sichuan, Hunan, Hubei and other places. They are mainly sedimentary phosphorites, and the resource base reserves rank second in the world. However, most of them are medium and low-grade phosphate rocks. Only by removing carbonate gangue and silicate gangue can the requirements of downstream operations be met. At present, for low-grade calcareous colloidal phosphate rock, there are mainly three flotation processes: forward-reverse flotation process, reverse-direct flotation process, and double reverse flotation process. Among them, the forward and reverse flotation process and the reverse flotation process It has good adaptabil...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/00B03B1/00
CPCB03B1/00B03B7/00B03D1/00
Inventor 李丰刘云涛杨勇刘星强
Owner BLUESTAR LEHIGH ENG INST CO LTD
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