CN102115087A - Method for producing silicon dioxide and calcium silicate by phosphorus residue - Google Patents
Method for producing silicon dioxide and calcium silicate by phosphorus residue Download PDFInfo
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- CN102115087A CN102115087A CN 201010615535 CN201010615535A CN102115087A CN 102115087 A CN102115087 A CN 102115087A CN 201010615535 CN201010615535 CN 201010615535 CN 201010615535 A CN201010615535 A CN 201010615535A CN 102115087 A CN102115087 A CN 102115087A
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- filter cake
- silicon dioxide
- silicate powder
- calcium
- calucium silicate
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Abstract
The invention relates to a method for producing silicon dioxide and calcium silicate by phosphorus residue, which comprises the steps of: grinding the phosphorus residue into coarse powder with 80-100 meshes, fully mixing the coarse powder with water and then reacting with excess hydrochloric acid, and obtaining mixture containing silicon dioxide precipitate and chloride; filtering the mixture, and obtaining mixed filtrate of chloride mainly containing calcium chloride as well as a silicon dioxide filter cake; washing, drying and grinding the silicon dioxide filter cake, and obtaining an industrial silicon dioxide product; putting the mixed filtrate of the chloride mainly containing the calcium chloride into a reactor and reacting with excess sodium silicate solution, and leading calcium ions to be combined with silicate for generating calcium silicate for precipitation; filtering and separating the obtained precipitate, and obtaining a calcium silicate filter cake and clear filtrate; and finally, washing, drying and grinding the calcium silicate filter cake, and obtaining the industrial calcium silicate.
Description
Technical field
The present invention relates to the comprehensive utilization and the processing technology field of phosphorus slag, particularly, relate to a kind of method of utilizing phosphorus slag to produce silicon-dioxide and Calucium Silicate powder.
Background technology
Phosphorus slag is the solid waste of discharging in the producing yellow Phosphorus by electric oven process.The past small portion is sold to the cement mill and is made cement blending agent production silicate cement, and most of as material of construction, its utility value is not high.Phosphorus slag change into the oxide compound that composition is mainly silicon-dioxide, calcium oxide, Calcium Fluoride (Fluorspan) and small amount of aluminum, iron, magnesium and phosphorus.For this reason, be necessary to explore the industrial utilization method of phosphorus slag, give full play to its potential economic worth.
Summary of the invention
Phosphorus slag change into the oxide compound that composition is mainly silicon-dioxide, calcium oxide, Calcium Fluoride (Fluorspan) and small amount of aluminum, iron, magnesium and phosphorus, for to its comprehensive utilization, the application provides a kind of method of utilizing phosphorus slag to produce silicon-dioxide and Calucium Silicate powder, this method has effectively been utilized the effective constituent in the phosphorus slag, for the comprehensive utilization of phosphorus slag provides new method.
The application's technical scheme is as follows: a kind of method of utilizing phosphorus slag to produce silicon-dioxide and Calucium Silicate powder, comprise following concrete steps, it is 80-100 purpose meal that phosphorus slag is pulverized, drop in the corrosion-resistant reactor, with the water thorough mixing, then, in corrosion-resistant reactor, drop into excessive hydrochloric acid, fully carry out chemical reaction under the agitation condition, because silicon-dioxide and hydrochloric acid can not react, therefore, reaction is last, obtain containing precipitation of silica and muriatic mixture, filter, obtain muriatic mixing filtrate and silica filter cake based on calcium chloride; Silica filter cake obtains the commercial silicon dioxide product through washing, dry and pulverizing; React with the excess silicic acid sodium solution in the muriate mixing filtrate input reactor based on calcium chloride, calcium ion and silicate are combined into Calucium Silicate powder and precipitate; Separate after filtration, obtain Calucium Silicate powder filter cake and clarifying filtrate; The Calucium Silicate powder filter cake obtains industrial Calucium Silicate powder through washing, drying with after pulverizing, and clarifying filtrate is through other technology separation compound wherein.
The method of utilizing phosphorus slag to produce silicon-dioxide and Calucium Silicate powder of the present invention has effectively been utilized the effective constituent in the phosphorus slag, for the comprehensive utilization of phosphorus slag provides new method.
Embodiment
Embodiment 1:
A kind of method of utilizing phosphorus slag to produce silicon-dioxide and Calucium Silicate powder, comprise following concrete steps, it is 80-100 purpose meal that the 500kg phosphorus slag is pulverized, drop in the corrosion-resistant reactor, with 500kg water thorough mixing, then, in corrosion-resistant reactor, drop into excessive hydrochloric acid, obtain containing precipitation of silica and muriatic mixture, filter, obtain muriatic mixing filtrate and silica filter cake based on calcium chloride; Silica filter cake obtains the commercial silicon dioxide product through washing, dry and pulverizing;
React with the excess silicic acid sodium solution in the muriate mixing filtrate input reactor based on calcium chloride, calcium ion and silicate are combined into Calucium Silicate powder and precipitate; Separate after filtration, obtain Calucium Silicate powder filter cake and clarifying filtrate; The Calucium Silicate powder filter cake obtains industrial Calucium Silicate powder through washing, drying with after pulverizing.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, its framework form can be flexible and changeable, can the subseries product.Just make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.
Claims (1)
1. method of utilizing phosphorus slag to produce silicon-dioxide and Calucium Silicate powder, it is characterized in that, comprise following concrete steps, it is 80-100 purpose meal that phosphorus slag is pulverized, and drops in the corrosion-resistant reactor, with the water thorough mixing, then, in corrosion-resistant reactor, drop into excessive hydrochloric acid, obtain containing precipitation of silica and muriatic mixture, filter, obtain muriatic mixing filtrate and silica filter cake based on calcium chloride; Silica filter cake obtains the commercial silicon dioxide product through washing, dry and pulverizing; React with the excess silicic acid sodium solution in the muriate mixing filtrate input reactor based on calcium chloride, calcium ion and silicate are combined into Calucium Silicate powder and precipitate; Separate after filtration, obtain Calucium Silicate powder filter cake and clarifying filtrate; The Calucium Silicate powder filter cake obtains industrial Calucium Silicate powder through washing, drying with after pulverizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010615535 CN102115087A (en) | 2010-12-31 | 2010-12-31 | Method for producing silicon dioxide and calcium silicate by phosphorus residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010615535 CN102115087A (en) | 2010-12-31 | 2010-12-31 | Method for producing silicon dioxide and calcium silicate by phosphorus residue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102115087A true CN102115087A (en) | 2011-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010615535 Pending CN102115087A (en) | 2010-12-31 | 2010-12-31 | Method for producing silicon dioxide and calcium silicate by phosphorus residue |
Country Status (1)
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| CN (1) | CN102115087A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692633A (en) * | 2016-01-12 | 2016-06-22 | 江南大学 | Modified calcium metasilicate and application of modified calcium metasilicate for removing heavy metal and phosphorus at same time |
| CN113149022A (en) * | 2021-04-30 | 2021-07-23 | 南昌大学 | Silica @ calcium silicate hollow nanosphere and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844790A (en) * | 2010-02-11 | 2010-09-29 | 汪晋强 | Method for preparing calcium carbonate from yellow phosphorus furnace slag to co-produce industrial salt and water glass |
| CN101844791A (en) * | 2010-02-11 | 2010-09-29 | 汪晋强 | Method for preparing calcium carbonate from yellow phosphorus furnace slag to co-produce industrial salt and silicon gel |
-
2010
- 2010-12-31 CN CN 201010615535 patent/CN102115087A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844790A (en) * | 2010-02-11 | 2010-09-29 | 汪晋强 | Method for preparing calcium carbonate from yellow phosphorus furnace slag to co-produce industrial salt and water glass |
| CN101844791A (en) * | 2010-02-11 | 2010-09-29 | 汪晋强 | Method for preparing calcium carbonate from yellow phosphorus furnace slag to co-produce industrial salt and silicon gel |
Non-Patent Citations (1)
| Title |
|---|
| 《矿冶》 20080331 苏毅等 黄磷炉渣资源化的试验研究 26-29 1 第17卷, 第1期 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692633A (en) * | 2016-01-12 | 2016-06-22 | 江南大学 | Modified calcium metasilicate and application of modified calcium metasilicate for removing heavy metal and phosphorus at same time |
| CN105692633B (en) * | 2016-01-12 | 2019-01-04 | 江南大学 | A kind of modified calcium silicates and its application for removing heavy metal in waste water and phosphorus simultaneously |
| CN113149022A (en) * | 2021-04-30 | 2021-07-23 | 南昌大学 | Silica @ calcium silicate hollow nanosphere and preparation method and application thereof |
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Application publication date: 20110706 |