Weathered collophanite graded processing technique

A processing technology and technology of collophosphate rock, which is applied in the field of quality separation processing of weathered collophosphate rock, can solve the problems of difficult density, low utilization rate of resources, inability to carry out long-term production, etc. Effect

Active Publication Date: 2012-11-14
YUNNAN PHOSPHATE CHEM GROUP CORP
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Problems solved by technology

Especially around the Dianchi Lake in Yunnan, there are hundreds of millions of tons of medium and low-grade weathered colloidal resources with abundant reserves. Due to processing technology and engineering technology problems, the utilization rate of this resource is low
Although the weathered collophanite has been trial-produced, the long-term production cannot be carried out in the end. The main reason is that the weathered collophanite has not been processed through the separation process, and it is difficult to thicken and defoam in the concentration of fine and tailings and downstream phosphoric acid production. Technical problems, poor comprehensive technical and economic indicators, unable to guarantee stable production

Method used

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  • Weathered collophanite graded processing technique

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Effect test

Embodiment 1

[0025] A sorting processing technology of weathered collophosphine, which is characterized in that the process flow is as follows: after the weathered collophosphate is crushed, a stage of grinding is carried out—the first stage of grinding products is preferentially graded—the fine-grained product is active slime—coarse The product of particle size is ore pulp entering the second-stage grinding—the product of the second-stage grinding is subjected to comprehensive quality separation processing—the product processed by easy flotation is relatively coarse-grained pulp entering the flotation processing system to produce high-grade phosphorus concentrate——difficult to float The selected and processed products are finer-grained pulp directly used as low-grade phosphorus concentrate, and the active slime obtained by prior classification can be directly sold as low-efficiency fertilizer. High-grade phosphorus concentrate is mixed with low-grade phosphorus concentrate to form the final...

Embodiment 2

[0041] The raw ore was crushed in the laboratory and ground to -0.074mm with a rod mill, accounting for 42.07%.

[0042] (1) The chemical composition of the comprehensive ore sample is:

[0043] Ore P 2 o 5 MgO Fe 2 o 3 al 2 o 3 SiO 2

[0044] Content 24.74 0.20 2.23 1.73 29.95

[0045] (2) Using hydrocyclone for priority classification, the yield of coarse-grained grade after removing fine-grained sludge is 80.54%, and the chemical composition is:

[0046] Ore P 2 o 5 MgO Fe 2 o 3 al 2 o 3 SiO 2

[0047] Content 25.35 0.16 1.29 1.34 30.42

[0048] (3) The coarse-grained part is ground to -0.074mm mesh by laboratory ball mill, accounting for 91.24%;

[0049] (4) Use a 165mm diameter hydrocyclone for grading

[0050] The purpose of using the hydrocyclone for grading is to classify the ground ore with 0.030mm as the cut-off point, and control the ore with a grade greater than 0.030mm in the sand settling products of the hydrocyclone to ...

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Abstract

The invention relates to a weathered collophanite graded processing technique, belonging to the technical field of chemical industry mineral processing. The weathered collophanite graded processing technique is one of techniques for implementing normal production and processing of weathered collophanite and enhancing phosphorus resource utilization ratio. The technique comprises steps as follows: weathered collophanite is crushed and subjected to primary grinding, the primary grinding product is firstly graded, the product with fine particle size is activated slime, the product with crude particle size is ore slurry and is subjected to secondary grinding, the secondary grinding product is subjected to comprehensive grading processing, the processed product which is easy for floatation is ore slurry with crush particle size and enters a floatation processing system to produce high-grade phosphorus concentrate, and the processed product which is hard for floatation is ore slurry with fine particle size and is directly used as low-grade phosphorus concentrate. The firstly graded activated slime can be directly sold as a low-efficiency fertilizer, the high-grade phosphorus concentrate and the low-grade phosphorus concentrate are mixed to form the final satisfactory mixed phosphorus concentrate product, and the floatation tailings of floatation processing directly enter a tailing house to be stored. The technique is especially suitable for processing weathered collophanite around the Dian Lake in Yunnan Province, implements normal and stable production of processing enterprises of weathered collophanite resources, enhances the utilization ratio of phosphorus resources of China, and has wide industrial popularization value.

Description

technical field [0001] The invention relates to the technical field of chemical mineral processing, in particular to a material-separated processing method of weathered collophosphate, which is one of the processes for realizing normal production and processing of weathered collophosphane and improving the utilization rate of phosphorus resources. Background technique [0002] my country is a country rich in phosphate rock resources, but the phosphorus resources are rich but not rich. For the phosphate resources in Yunnan, P 2 o 5 The reserves of rich ore resources with a content higher than 30% are less than 100 million tons, and the crisis of rich ore resources has clearly emerged. In particular, there are hundreds of millions of tons of medium and low-grade weathered collophosphine resources with abundant reserves around Dianchi Lake in Yunnan. Due to processing technology and engineering technical problems, the utilization rate of this resource is low. Although the we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
Inventor 李耀基郭永杰李骥李小双
Owner YUNNAN PHOSPHATE CHEM GROUP CORP
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