Method for making sodium metasilicate by utilizing quick cooling crystallization
A technology of sodium metasilicate and cold crystallization, applied in the direction of silicate, alkali metal silicate, etc., to achieve the effect of large production capacity, improved efficacy and fast production speed
Inactive Publication Date: 2002-05-08
张孙隆
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0012] The purpose of the present invention is to overcome the defects in the existing method for producing sodium metasilicate crystals, and provide a new method for producing sodium metasilicate by using rapid cooling crystallization, so that it is not only completely free from pollution and public hazards in the manufacturing process , and the production capacity is large, the production speed is fast, and at the same time, it can be produced continuously and nearly automatically. The final product has high quality and purity, does not contain skin water, and can fully meet the CNS standard
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] In order to facilitate understanding of the manufacture method of the present invention, at first existing traditional manufacturing sodium metasilicate (Na 2 Sio 3 .nH 2 O) The process description is as follows. Please see first figure 1 As shown, the existing traditional manufacturing sodium metasilicate (Na 2 Sio 3 .nH 2 (0) process, which mainly is sodium silicate (water glass Na 2 OSio 2 .5H 2 O) and liquid caustic soda (NaOH) are input in a blending tank, and add about 1 / 3 sodium silicate and liquid caustic soda weight and water to dilute, carry out last 2 hours and blend, then the diluted blended liquid is input in batches In the two groups of crystallization tank groups, wait for about 48 hours of reaction crystallization; wherein, each group of crystallization tank groups is composed of 8 to 9 crystallization tank monomers, and the sodium metasilicate in the 8 to 9 crystallization tanks The crystals and solutions are respectively collected in the same ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The preparation method of sodium metasilicate by using quenching crystallization process includes the following steps: uniformly mixing sodium silicate and liquid sodium hydroxide according to a proper proportion and stirring them for 5-20 min.; making the mixed liquor produce reaction and heating to 50-80 deg.C; heating and concentrating, slowly pumping the concentrate into prilling tower, and quenching crystallizing and prilling; in which the mixed liquor concentrated and heated for 60-90 min. is pumped into the temp. range of 20 deg.C below zero to 10 deg.C above zero of the prilling tower, and can be crystallized and prilled to obtain the sodium metasilicate containing nine crystal waters; and the mixed liquor concentrated and heated for 100-150 min. is pumped into the temp. range of 5-25 deg.C of the prilling tower, crystallized and prilled to obtain the sodium metasilicate containing five crystal waters.
Description
1. Technical field: [0001] The invention relates to a method for producing sodium metasilicate by rapid cooling crystallization, in particular to a method for producing sodium metasilicate by rapid cooling crystallization without producing mother liquor water. 2. Background technology: [0002] The existing method of manufacturing sodium metasilicate crystal is mainly to uniformly stir sodium silicate (water glass) and liquid caustic soda to dilute and reconcile, and the diluted reconciled solution is input into two groups of crystallization tanks in batches, and wait for the reaction crystallization respectively After about 48 hours, after the crystallization of each group is completed, they will be collected in the centralized tank, and finally dehydrated. After the dehydration process is completed, it will be sodium metasilicate crystallization. And the above-mentioned existing method for manufacturing sodium metasilicate crystal, wherein there are some following defects ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): C01B33/32
Inventor 张孙隆
Owner 张孙隆