Dry-screening pre-selecting waste-discarding mineral separation technology for monohydrallite with low alumina silica ratio

An aluminum-silicon ratio and bauxite technology, which is applied in the field of low-aluminum-silicon ratio bauxite dry-screening, pre-selection and discarding waste beneficiation technology, can solve the problems of bauxite flotation not achieving good results, and save equipment and equipment. The effect of civil construction investment, reduction of energy consumption and steel ball consumption, and reduction of production cost

Inactive Publication Date: 2019-02-01
CHINA NERIN ENG
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  • Claims
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Problems solved by technology

The flotation used in production is generally positive flotation

Method used

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  • Dry-screening pre-selecting waste-discarding mineral separation technology for monohydrallite with low alumina silica ratio

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Embodiment 1

[0025] Such as figure 1 As shown, according to the present invention, a low-aluminum-silicon ratio bauxite dry screening process is realized in this way, the stope is transported to the dressing plant and the low-alumina-silicon ratio bauxite raw ore is passed through a bar screen (1) to The raw ore is divided into oversize lump ore A and undersize powder ore B. The oversize lump ore A is sent to the jaw crusher (2) for coarse crushing to obtain coarsely crushed ore C; the undersize ore B is fed into the first vibrating Sieve (3) carries out the first stage of dry sieving to obtain the above-sieve ore D and the under-sieve waste rock E. The under-sieve waste rock E is transported to the waste rock yard, and the above-sieve ore D and coarsely crushed ore C are combined and sent to the cone crushing Machine (4) carries out secondary crushing to obtain secondary crushed ore F; secondary crushed ore F is fed into the second vibrating screen (5) for the second stage of dry screenin...

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Abstract

The invention relates to a dry-screening pre-selecting waste-discarding mineral separation technology for monohydrallite with the low alumina silica ratio. The process comprises the steps of directlyscreening raw ore through a bar screen so as to obtain plus sieve lump ore and minus sieve powder ore, carrying out first-section dry-screening and waste-discarding on the minus sieve powder ore through a first vibrating screen, and producing (0 to 10mm) minus sieve waste ore and plus sieve ore; and coarsely crushing the plus sieve lump ore, combining the crushed plus sieve lump ore and the plus sieve ore of the first vibrating screen, carrying out intermediate crushing, carrying out second-section dry-screening and waste-discarding on the ore subjected to intermediate crushing through a second vibrating screen, and producing (0 to 10mm) minus sieve waste rock and plus sieve ore, wherein the plus sieve ore is a final DSO product. According to the process provided by the invention, after the raw ore is subjected to two sections of dry-screening pre-selecting waste-discarding selection, the discarded waste rock yield reaches up to 30 percent, the alumina silica ratio of ground monohydrallite is improved by about 10 percent, the mineral separation and monohydrallite smelting cost can be reduced, the monohydrallite ore with the low alumina silica ratio is favorably developed and utilized, and the resource utilization rate is improved.

Description

technical field [0001] The invention relates to a low-aluminum-silicon-ratio bauxite dry-screening pre-selection discarding waste beneficiation process, and specifically belongs to the technical field of crushing and pre-selection of the beneficiation process. Background technique [0002] my country is rich in bauxite resources, most of which belong to diaspore type bauxite, accounting for 98.33% of the country's total reserves, most of which have high aluminum, high silicon, low iron, low A / S, etc. features. The use of such low-aluminum-silicon-ratio raw materials to produce alumina not only requires high energy consumption, but also increases the alkali consumption of alumina production, serious alumina loss and increased production costs. [0003] The key to improving the utilization rate of bauxite resources with low aluminum-silicon ratio in my country is to increase the ratio of aluminum to silicon in bauxite. To increase the aluminum-silicon ratio of bauxite, the me...

Claims

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Application Information

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IPC IPC(8): B02C21/00B02C23/08B07B15/00
CPCB02C21/00B02C23/08B07B15/00
Inventor 谭燕葵雷存友唐国标王福元陈小爱王建国杨斌
Owner CHINA NERIN ENG
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