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Steady-flow positive floatation method applicable to fine-grain difficulty separated collophane

A technology of positive flotation and colloidal phosphate rock, used in flotation, solid separation and other directions, can solve the problems of large aeration volume, no stable flow measures, high stirring intensity, etc., to avoid falling off, improve sorting and concentrate. The effect of low recovery rate and stirring intensity

Active Publication Date: 2014-08-06
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the flotation machines used in the industrial production of phosphate rock flotation are all flotation machines designed for metal ores. This type of flotation machine has a large stirring intensity, a large amount of gas filling, no flow stabilization measures, and is not suitable for difficult separation of fine particles. Positive flotation of collophosite

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1, a kind of steady-flow positive flotation method suitable for fine-grained refractory colloidal phosphate rock:

[0015] (1) Control the feed fineness of positive flotation; the fineness of feed feed in positive flotation is controlled to -200 mesh and the mass percentage is 70%;

[0016] (2) Install a stabilizing plate on the flotation machine; the stabilizing plate is fixedly installed above the stirring impeller, and the area of ​​the stabilizing plate is larger than the plane area of ​​the stirring impeller; or the stabilizing plate is fixedly installed around the stirring impeller, which is tooth-shaped Evenly distributed around the stirring impeller;

[0017] (3) The value of controlling the linear velocity of the stirring impeller of the flotation machine is 2.5 m / s;

[0018] (4) Control the inflation volume of the flotation machine to 25 liters / m 2 .minute.

Embodiment 2

[0019] Embodiment 2, a kind of steady-flow positive flotation method suitable for fine-grained refractory colloidal phosphate rock:

[0020] (1) Control the feed fineness of positive flotation; the fineness of feed feed in positive flotation is controlled to -200 mesh and the mass percentage is 85%;

[0021] (2) Install a stabilizing plate on the flotation machine; the stabilizing plate is fixedly installed above the stirring impeller, and the area of ​​the stabilizing plate is larger than the plane area of ​​the stirring impeller; or the stabilizing plate is fixedly installed around the stirring impeller, which is tooth-shaped Evenly distributed around the stirring impeller;

[0022] (3) The value of controlling the linear velocity of the stirring impeller of the flotation machine is 5.5 m / s;

[0023] (4) Control the inflation volume of the flotation machine to 200 liters / m 2 .minute.

Embodiment 3

[0024] Embodiment 3, a kind of steady-flow positive flotation method suitable for fine-grained refractory colloidal phosphate rock:

[0025] (1) Control the feed fineness of positive flotation; the fineness of feed feed in positive flotation is controlled to -200 mesh and the mass percentage is 75%;

[0026] (2) Install a stabilizing plate on the flotation machine; the stabilizing plate is fixedly installed above the stirring impeller, and the area of ​​the stabilizing plate is larger than the plane area of ​​the stirring impeller; or the stabilizing plate is fixedly installed around the stirring impeller, which is tooth-shaped Evenly distributed around the stirring impeller;

[0027] (3) The value of controlling the linear velocity of the stirring impeller of the flotation machine is 3.5 m / s;

[0028] (4) Control the inflation volume of the flotation machine to 50 liters / m 2 .minute.

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Abstract

The invention relates to a steady-flow positive floatation method applicable to fine-grain difficulty separated collophane. According to the method, the steady flowing state of positive floatation pulp of the fine-grain difficulty separated collophane is achieved by the following steps: (1) controlling the fineness of feeding materials during positive floatation; (2) installing a steady flow plate on a floating machine; (3) controlling a stirring impeller of the floating machine to be in a low rotating speed state; and (4) controlling the floating machine to be at a low inflating volume. By the method, pulp in the floating machine can be in a steady flowing state which is capable of improving the separation property and the concentrate recycling rate during positive floatation of the fine-grain difficulty separated collophane, the energy consumption of the floating machine is reduced due to low stirring intensity, and abrasion of the impeller of the floating machine is lowered.

Description

technical field [0001] The invention belongs to the technical field of phosphate rock beneficiation, in particular to a steady-flow positive flotation technology of fine-grained refractory colloidal phosphate rock. Background technique [0002] The positive flotation of fine-grained refractory colloidal phosphate rock is a major problem in the field of phosphate rock flotation. The difficulty lies in that, on the one hand, the embedded particle size of phosphorus minerals is fine, and it needs to be ground to a finer particle size to dissociate phosphorus minerals and gangue minerals. When the particle size is finer, due to the increase of mineral surface area, each The adsorption capacity of these minerals increases, resulting in poor selectivity of positive flotation collectors, and more fine-grained gangue minerals are entrained in flotation froth, so when the particle size is finer, the separation performance of positive flotation On the other hand, collophosite itself ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02
Inventor 冯春晖宋文义刘升林曹效权朱孔金刘国举刘星强李丰刘养春
Owner BLUESTAR LEHIGH ENG INST CO LTD
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