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Method for carrying out comprehensive treatment on alumyte ore washing fine slit

A comprehensive treatment and bauxite technology, applied in the field of beneficiation tailings treatment, can solve problems such as failure to meet requirements, failure to achieve resource recycling, and low effect, to eliminate sludge stockpiling, improve utilization value, and eliminate fine sludge. stacking effect

Inactive Publication Date: 2011-11-23
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although such measures have made some progress, they have little effect and cannot meet the required requirements, and have not realized the recycling of resources, and have not fundamentally solved the substantive problem of ore slime stockpiling
In addition, there are also studies using flotation to reduce the silicon content in bauxite, but the slime size is too fine to be successful; and chemical leaching is used to recover the iron and aluminum, but this part only accounts for 20% About 80% of the residue still needs to be stockpiled

Method used

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  • Method for carrying out comprehensive treatment on alumyte ore washing fine slit

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Experimental program
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Effect test

Embodiment 1

[0019] figure 1 Shown is an embodiment of a comprehensive treatment method for bauxite ore washing fine sludge of the present invention. Taking the raw ore washing fine mud of Pingguo Aluminum Mine in Guangxi as an example, the main components of the slime are: Fe15.5wt%, SiO 2 25.4wt%, Al 2 o 3 42.23wt%, its comprehensive treatment method is as follows:

[0020] (a) Concentrating the ore washing fine mud by gravity settling method so that its solid content is 30%;

[0021] (b) Add hydrochloric acid to the ore slime, adjust the acid concentration of the leaching solution to be 15%, solid-to-liquid ratio=1:3, stir and mix at a temperature of 75°C, and react for 80 minutes in acid leaching, Fe 2 o 3 The leaching rate reaches 98.5%;

[0022] (c) filter after acid leaching to obtain liquid phase and solid phase, the iron in the ore slime enters the liquid phase, and the silicon-aluminum matter enters the solid phase; After the solid phase is cleaned 3 times with 5% dilute hy...

Embodiment 2

[0027] This embodiment differs from Embodiment 1 in that:

[0028] In step (c), after the solid phase was washed 5 times with 3% dilute hydrochloric acid, then washed with tap water, Fe in the solid phase 2 o 3 reduced to 0.18%;

[0029] In step (d), after filtering, purifying and removing impurities from the liquid phase obtained in step (c), add sodium carbonate to make the pH of the solution 7.0 to 8.0, produce iron carbonate precipitation, filter and wash, and roast the filter residue at 600°C for 60 minutes , to obtain Fe-containing 2 o 3 It is 98% iron oxide red pigment product.

Embodiment 3

[0031] This embodiment differs from Embodiment 1 in that:

[0032] In step (a), its solid content of the concentrated ore slime is 35%;

[0033] In step (b), adjust the acid concentration of the leaching solution to 25%, the solid-to-liquid ratio=1:2, stir and mix at a temperature of 60° C., and react with acid leaching for 90 minutes;

[0034] In step (e), dry the solid phase obtained in step (c) and silane coupling agent in a weight ratio of solid phase: silane coupling agent = 100:02, mix and place in a ceramic ball mill for grinding for 6 hours to obtain a particle size It is an active functional filler with 100% less than 0.1mm and whiteness of 81%. The filler is used for filling modification of engineering plastics, interior and exterior wall coatings and paints, etc., on the one hand, it reduces the cost of polymer materials, and on the other hand, it can improve the shear strength and impact resistance of materials.

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Abstract

The invention discloses a method for carrying out comprehensive treatment on alumyte ore washing fine slit, comprising the following steps of: separating irony minerals from silica-alumina minerals by adopting acid leaching, polymerizing the irony minerals into a poly iron water purifying agent or carrying out purifying, dust removing, oxidizing and roasting on the irony minerals to obtain an iron oxide red pigment; and processing the silica-alumina minerals into filler products. By adopting the method disclosed by the invention, the traditional thinking that the alumyte ore washing fine slitis restricted to stockpiling and can obtain single recycled components is changed, and ore sludge full-component recycling is realized, thus the aims of completely eliminating stockpiling of the ore sludge and utilizing a mined resource to the utmost extent are achieved.

Description

technical field [0001] The invention relates to the technical field of ore dressing tailings treatment, in particular to a method for comprehensive treatment and recycling of bauxite ore washing fine mud. Background technique [0002] Aluminum is one of the indispensable non-ferrous metals in the national economy. my country is rich in bauxite resources. As an important aluminum resource base in Pingguo, Guangxi, the ratio of aluminum to silicon in the fine mud in the original ore in this area cannot meet the metallurgical requirements, so it must be extracted by ore washing. However, the extracted slime is fine and sticky, and difficult to concentrate and dehydrate. Therefore, it is stored in the tailings pond. After many years, it will not deposit and remain in a suspended state, thus occupying a large amount of tailings storage capacity, and there is a leakage of the sludge to pollute the environment. hidden risks. [0003] For this reason, people have carried out resea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C01G49/02
Inventor 何国伟叶志平王景鑫范彬何曾宇
Owner GUANGZHOU UNIVERSITY
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