CN102115086A - Method for producing silicon dioxide and calcium carbonate by phosphorus slag - Google Patents
Method for producing silicon dioxide and calcium carbonate by phosphorus slag Download PDFInfo
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- CN102115086A CN102115086A CN 201010615523 CN201010615523A CN102115086A CN 102115086 A CN102115086 A CN 102115086A CN 201010615523 CN201010615523 CN 201010615523 CN 201010615523 A CN201010615523 A CN 201010615523A CN 102115086 A CN102115086 A CN 102115086A
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- filter cake
- phosphorus slag
- silicon dioxide
- calcium
- chloride
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- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a method for producing silicon dioxide and calcium carbonate by phosphorus slag. The method comprises the steps of: smashing phosphorus slag into coarse powders with 80-100 meshes, abundantly mixing the coarse powder with water, putting excessive hydrochloric acid into a corrosion-resistant reactor, abundantly performing the chemical reaction under the condition of stirring, and filtering to obtain mixed filter liquor of chloride which takes calcium chloride as a main part and a silicon dioxide filter cake; washing, drying and smashing the silicon dioxide filter cake to obtain an industrial silicon dioxide product; reacting the mixed filter liquor of the chloride which takes the calcium chloride as the main part with the excessive sodium carbonate solution, filtering and separating the filter liquor from the filter cake, and washing, drying and smashing the filter cake to obtain an industrial silicon dioxide product. The active constituents in the phosphorus slag are effectively used, so that a new method for the comprehensive utilization of the phosphorus slag is provided.
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 lime carbonate.
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 lime carbonate, 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 lime carbonate, 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; Mixing filtrate based on the muriate of calcium chloride drops in the reactor and the excess of sodium carbonate solution reaction, in the yellow soda ash and mix hydrochloric acid in the filtrate, calcium ion and carbanion are combined into lime carbonate and precipitate simultaneously, certainly, a spot of magnesium ion in the solution also is combined into magnesiumcarbonate with carbanion and precipitates, and iron and aluminium still are present in solution with the ionic form; After filtration the magnesiumcarbonate precipitation of precipitation of calcium carbonate and trace is separated with chloride soln, obtain containing the calcium carbonate filter cake and the muriate filtrate of a small amount of magnesiumcarbonate, calcium carbonate filter cake obtains technical calcium carbonate through washing, drying with after pulverizing.
The muriate filter cake is through other technology separation sodium-chlor wherein, muriates such as iron(ic) chloride and aluminum chloride.
The method of utilizing phosphorus slag to produce silicon-dioxide and lime carbonate 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 lime carbonate, 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, fully carry out chemical reaction under the agitation condition, 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; Mixing filtrate based on the muriate of calcium chloride drops in the reactor and the excess of sodium carbonate solution reaction, in the yellow soda ash and mix hydrochloric acid in the filtrate, calcium ion and carbanion are combined into lime carbonate and precipitate simultaneously, a spot of magnesium ion in the solution also is combined into magnesiumcarbonate with carbanion and precipitates, and iron and aluminium still are present in solution with the ionic form; After filtration the magnesiumcarbonate precipitation of precipitation of calcium carbonate and trace is separated with chloride soln, obtain containing the calcium carbonate filter cake and the muriate filtrate of a small amount of magnesiumcarbonate, calcium carbonate filter cake obtains the industrial carbonic acid calcium product 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 lime carbonate, 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, fully carry out chemical reaction under the agitation condition, 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; Mixing filtrate based on the muriate of calcium chloride drops in the reactor and the excess of sodium carbonate solution reaction, in the yellow soda ash and mix hydrochloric acid in the filtrate, calcium ion and carbanion are combined into lime carbonate and precipitate simultaneously, a spot of magnesium ion in the solution also is combined into magnesiumcarbonate with carbanion and precipitates, and iron and aluminium still are present in solution with the ionic form; After filtration the magnesiumcarbonate precipitation of precipitation of calcium carbonate and trace is separated with chloride soln, obtain containing the calcium carbonate filter cake and the muriate filtrate of a small amount of magnesiumcarbonate, calcium carbonate filter cake obtains the industrial carbonic acid calcium product through washing, drying with after pulverizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010615523 CN102115086A (en) | 2010-12-31 | 2010-12-31 | Method for producing silicon dioxide and calcium carbonate by phosphorus slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010615523 CN102115086A (en) | 2010-12-31 | 2010-12-31 | Method for producing silicon dioxide and calcium carbonate by phosphorus slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102115086A true CN102115086A (en) | 2011-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010615523 Pending CN102115086A (en) | 2010-12-31 | 2010-12-31 | Method for producing silicon dioxide and calcium carbonate by phosphorus slag |
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| CN (1) | CN102115086A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502662A (en) * | 2011-11-09 | 2012-06-20 | 段甲明 | Method for preparing precipitated white carbon black by using waste slag for producing ferrovanadium |
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 201010615523 patent/CN102115086A/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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502662A (en) * | 2011-11-09 | 2012-06-20 | 段甲明 | Method for preparing precipitated white carbon black by using waste slag for producing ferrovanadium |
| CN102502662B (en) * | 2011-11-09 | 2013-09-11 | 段甲明 | Method for preparing precipitated white carbon black by using waste slag for producing ferrovanadium |
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Application publication date: 20110706 |