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Method for obtaining powdered sodium silicate from sandy tailings generated in iron ore beneficiation process

A technology for iron ore and tailings, applied in silicates, alkali metal silicates, chemical instruments and methods, etc., can solve problems such as low solubility

Active Publication Date: 2022-03-11
VALE LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if it were possible to produce silicates with a silica modulus greater than 4, the solubility is actually very low

Method used

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  • Method for obtaining powdered sodium silicate from sandy tailings generated in iron ore beneficiation process
  • Method for obtaining powdered sodium silicate from sandy tailings generated in iron ore beneficiation process
  • Method for obtaining powdered sodium silicate from sandy tailings generated in iron ore beneficiation process

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Embodiment Construction

[0060] The invention may have different embodiments, preferred embodiments of the invention are shown in the drawings and the following detailed discussion, but it should be understood that the description is only one example of the principles of the invention and is not intended to limit the invention to within the scope described in this manual.

[0061] The materials required for the invention will be described in detail by way of example, not limitation, and the materials and methods disclosed herein may include various details and procedures without departing from the scope of the invention. All ratios and percentages shown below are by weight unless otherwise indicated.

[0062] The main method of the present invention involves a method containing high silicon dioxide (SiO2) from its composition 2 ) percentage of the material to produce sodium silicate method, the material is the tailings produced in the iron ore beneficiation process.

[0063] In a preferred embodimen...

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Abstract

The invention relates to a method for obtaining powdery sodium silicate from sandy tailings generated in an iron ore beneficiation process. The invention mainly relates to a raw material for producing geopolymers used in civil construction industry and road paving. By means of the sandy tailings, the additional value of the sandy tailings can be increased by obtaining commercial products, and the influence of the tailings on the environment in large tailing dam treatment can be reduced.

Description

technical field [0001] The invention relates to a method for obtaining powdery sodium silicate from sandy tailings produced during mineral production (especially iron ore beneficiation). The invention is primarily intended for the production of raw materials for geopolymers used in the civil construction industry and road paving, as well as active materials in alkaline media. Using this kind of sandy tailings can not only increase its added value by obtaining commercial products, but also reduce the impact of this kind of sandy tailings on the environment in the treatment of large tailings dams. Background technique [0002] Sodium silicate is an inorganic compound with the chemical formula Na 2 O.xSiO 2 (where x is between 2.06 and 3.87), made of SiO 2 (silica or silica) and Na 2 O (sodium oxide) reacts to form. Sodium silicate exists in both aqueous and solid form and is used in numerous applications, products and industrial processes in various industries. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/32B09B3/70B09B3/40
CPCC01B33/32C01B33/325B09B3/80C01P2004/61
Inventor J·C·福格特F·S·拉梅拉斯
Owner VALE LIMITED