Method for mixed application of sodium silicate binder and polyving akohol

A polyvinyl alcohol, mixed application technology, applied in the petroleum industry, solid fuel, fuel and other directions, can solve the problems of poor water resistance, poor water resistance, unsatisfactory water resistance, etc., and achieve the effect of improving water resistance

Inactive Publication Date: 2013-05-22
苗若鹏 +1
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Problems solved by technology

[0002] Sodium silicate (also known as sodium silicate, water glass, etc.) and polyvinyl alcohol are two cheap binders, but the water resistance is too poor when used alone
In order to improve its water resistance and enhance its cohesiveness, the background technology adopts adding a small amount of sodium silicate in a certain proportion to improve its water resistance in polyvinyl alcohol. However, b

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  • Method for mixed application of sodium silicate binder and polyving akohol

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Example Embodiment

[0013] In the following, the present invention will be further described through embodiments with reference to the drawings.

[0014] In the embodiment, the method of mixing and applying the binder sodium silicate and polyvinyl alcohol includes the following process: ① separately add the sodium silicate solution and the polyvinyl alcohol solution to the respective loose materials, and mix and stir them separately to form Loose materials containing sodium silicate and loose materials containing polyvinyl alcohol; ②Mix the above loose materials containing sodium silicate and loose materials containing polyvinyl alcohol together, and perform a second stirring to become mixed loose materials; ③Then The mixed loose materials are sent to the press for pressure forming.

[0015] More specific process steps: the loose material is coal powder, the particle size is less than 6 mm, and the sodium silicate (water glass, soda alkali) solution and the polyvinyl alcohol solution are independently...

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Abstract

The invention relates to a method for mixed application of a sodium silicate binder and polyving akohol and belongs to the technical field of loose material bonded molding. The technical scheme is that the method comprises the following steps of: (1) respectively adding respective loose materials in the sodium silicate solution and the polyving akohol solution independently for respectively mixing and stirring; (2) mixing the loose material containing the sodium silicate and that containing the polyving akohol for secondary stirring to obtain the mixed loose material; and (3) conveying the mixed loose material into a press for pressure forming. The method for mixed application of a sodium silicate binder and polyving akohol disclosed by the invention has the positive effects of preventing the phenomenon of losing the bonding capability caused by 'jelling' after two binder liquids are mixed, bonding the loose material by making the best of the water-resistance and instantaneous caking properties of the 'gel' generated during 'jelling' at the same time, reducing the breakage rate after the loose material is molded as the bonded loose material is provided with strong instantaneous initial strength after being molded, and obtaining the water-resistance property which is lacking when the sodium silicate and the polyving akohol are independently used.

Description

technical field [0001] The invention relates to a method for mixing sodium silicate and polyvinyl alcohol as a binder, which fully utilizes the "gelation" phenomenon that occurs after the two binders are miscible to carry out bonding and pressure molding of loose materials, which belongs to the loose material bonding method. Combined technology field. Background technique [0002] Sodium silicate (also known as sodium silicate, water glass, etc.) and polyvinyl alcohol are two cheap binders, but their water resistance is too poor when used alone. In order to improve its water resistance and enhance its cohesiveness, the background technology adopts adding a small amount of sodium silicate in a certain proportion to improve its water resistance in polyvinyl alcohol. However, because the molecular concentration of sodium silicate is too low in the mixed solution , water resistance is not ideal. Generally, the addition ratio of sodium silicate and polyvinyl alcohol is strictly...

Claims

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Application Information

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IPC IPC(8): C10L5/12C10L5/14
Inventor 苗若鹏戴吾昕
Owner 苗若鹏
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