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Laminated sodium disilicate and quick synthesis

A sodium disilicate, layered technology, applied in silicates, alkali metal silicates, inorganic/elemental cleaning compositions, etc., can solve the problems of affecting product quality, affecting production efficiency, prolonging crystallization time, etc. The effect of good calcium and magnesium ion exchange capacity, low production cost and good compatibility

Inactive Publication Date: 2005-03-02
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But above-mentioned two kinds of methods produce the time of layered sodium disilicate all relatively long, influence production efficiency; The prolongation of crystallization time easily makes the product contain relatively more miscellaneous crystal phase α phase layered sodium disilicate and vitreous body, affect the quality of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0026] Weigh 5 grams of instant sodium silicate into a porcelain crucible, quickly pour it into a stainless steel plate in a muffle furnace with a constant temperature of 800°C, and take it out after heating for 210 seconds. The crystal structure was examined by XRD. The results are shown in Table 1

Embodiment approach 2

[0028] Weigh 5 grams of instant sodium silicate in a porcelain crucible, quickly pour it into a stainless steel plate in a muffle furnace with a constant temperature of 820°C, and take it out after heating for 110 seconds. The crystal structure was examined by XRD. The results are shown in Table 1

Embodiment approach 3

[0030] Weigh 5 grams of instant sodium silicate in a porcelain crucible, quickly pour it into a stainless steel plate in a muffle furnace with a constant temperature of 840°C, and take it out after heating for 100 seconds. The crystal structure was examined by XRD. The results are shown in Table 1

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PUM

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Abstract

A laminated sodium bisilicate as the assistant of non-phosphorus detergent is prepared from instant sodium silicate through fast calcining at 750-880 deg.C to obtain the product with delta phase and beta phase. Its advantages are strong Ca-Mg ions exchanging power and buffering capability, and better compatibility.

Description

technical field [0001] The invention discloses a method for rapidly synthesizing layered sodium disilicate, which belongs to the field of inorganic application materials, and specifically relates to a layered sodium disilicate material used as a non-phosphorus detergent additive and its preparation. technical background [0002] Synthetic detergent is a necessity in human daily life. In the preparation of synthetic detergent, 15-20% of detergent builders must be added to effectively remove calcium and magnesium ions in water and improve the use efficiency of surfactants. At present, the most widely used additive is sodium tripolyphosphate, but its use has obvious pollution to the environment, and it is one of the main pollution sources of water eutrophication. [0003] Phosphate-free detergent is an important part of environmental protection. At present, the phosphorus-free detergent builders that replace sodium tripolyphosphate include: 4A zeolite molecular sieve, hydrated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/32C11D3/08
Inventor 董晋湘徐红李晋平
Owner TAIYUAN UNIV OF TECH