CN105502425A - Method for preparing sodium metasilicate nonahydrate by using waste boron mud residue - Google Patents
Method for preparing sodium metasilicate nonahydrate by using waste boron mud residue Download PDFInfo
- Publication number
- CN105502425A CN105502425A CN201410478025.2A CN201410478025A CN105502425A CN 105502425 A CN105502425 A CN 105502425A CN 201410478025 A CN201410478025 A CN 201410478025A CN 105502425 A CN105502425 A CN 105502425A
- Authority
- CN
- China
- Prior art keywords
- boron mud
- filtrate
- sodium metasilicate
- carrying
- clarification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Treatment Of Sludge (AREA)
- Silicon Compounds (AREA)
Abstract
The invention relates to a method for preparing sodium metasilicate nonahydrate by using waste boron mud residue. The method comprises: heating boron mud by using steam to achieve a temperature of 59-81 DEG C, maintaining for 1-2 h, and carrying out centrifugal drying through a centrifuge to obtain filter cake boron mud; carrying out a reaction on the filter cake boron mud and hydrochloric acid in an anti-corrosion first reactor according to a pure mass ratio of 1:1.62-2.04, carrying out a chemical reaction under gentle stirring to generate a magnesium chloride hydrate, and filtering the magnesium chloride hydrate to obtain silica filtration residue; and carrying out a reaction on the silica filtration residue and sodium carbonate in a closed second reactor according to a pure mass ratio of 1:1.53-1.95, carrying out heating pressurization and gentle stirring to generate a sodium metasilicate nonahydrate aqueous solution, filtering, conveying the filtrate into a pressure reducing distiller, carrying out distillation concentration, discharging when only nine crystal water are retained in the solution, cooling, and crystallizing to obtain the sodium metasilicate nonahydrate crystal product. According to the present invention, the re-polluted waste material of the boron mud waste material is treated, such that the secondary pollution is avoided, and the economic benefits are created.
Description
Technical field
The present invention relates to the technical field of the inorganic chemical industry disposal of three wastes and comprehensive utilization, particularly relate to a kind of method utilizing useless boron sludge to prepare the inclined silicon of nine water.
Background technology
Boron mud is with szaibelyite (2MgOB
2o
3h
2o) be raw material, by roasting, pulverizing, mix with soda ash, take carbon water law to produce borax (Na
2b
4o
710H
2o), remaining after washing, crystallisation process extract borax solid waste.Produce one ton of borax and can produce 4 tons of boron mud, produce the borax plant of 8000 tons per year for one, can produce boron mud is every year 3.2 ten thousand tons.Because the quantity discharged of boron mud is comparatively large, the multiple comprehensive Utilization Ways of current domestic employing, except production Magnesium Carbonate Light 41-45 and magnesium oxide and plastic and rubber filler, also have produce Peng Mei phosphorus composite fertilizer, to make the coal of honeycomb briquette reinforced and do architectural borax etc.
Magnesium in boron mud is all generally exist with the form of magnesiumcarbonate, sometimes also has difference along with the mineral products difference of szaibelyite.The component of producing Magnesium Carbonate Light 41-45 boron mud is such: magnesium oxide 38%, silicon-dioxide 20%, carbonic acid gas 17%, boron oxide 3%, calcium oxide 3% and manganese oxide 0.11%, other are moisture content.Form solution with boron mud waste material for raw material makes it to become muriate by hydrochloric acid, remove the compound that insoluble impurity obtains the magnesium clarified.Then at the compound of other magnesium of processing, compound of boron etc. is also had.Therefore, be impeccable with regard to the purity of product, quality also reaches a standard.
After the improvement of boron mud and utilization obtain magnesium compound and boron compound, remaining filtration waste residue is only remaining to be difficult to carry out the silicon-dioxide of chemical reaction, its content reaches 80 ~ 90%, now develop silicon goods to be necessary, so through research, successively obtain water glass, zero water sodium metasilicate, metasilicate pentahydrate sodium and non-hydrate sodium metasilicate.
Summary of the invention
Technical problem to be solved by this invention is, the waste material of pollution again of boron mud waste material is processed, comprehensive utilization, outside the compound of output magnesium and boron, also produce silicon product, both avoided secondary pollution, can create very large economic benefit for enterprise again, be the model of the chemical industry comprehensive regulation and utilization.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method utilizing useless boron sludge to prepare the inclined silicon of nine water, comprises the steps:
By boron mud steam heating to 59 ~ 81 degree, maintain 1 ~ 2 hour, then dry with whizzer, realize solid-liquor separation, obtain filtrate and filter cake boron mud, filtrate sends to deep processing separately;
Filter cake boron mud (magnesium oxide meter) and hydrochloric acid are reacted in corrosion resistant first reactor with pure mass ratio 1: 1.62 ~ 2.04, blowing slowly, stirring issues biochemical reaction, reaction generates the hydrate of magnesium chloride, other components generate calcium chloride and a small amount of Manganous chloride tetrahydrate, the hydrate of magnesium chloride is filtered, obtain filtrate and the silicon-dioxide filter residue of clarification, the filtrate of clarification sends to other deep processing;
Silicon-dioxide filter residue and sodium carbonate are reacted in the second airtight reactor with pure mass ratio 1: 1.53 ~ 1.95, under the condition of heating, stirring of pressurizeing and blow slowly, reaction generates the non-hydrate sodium metasilicate aqueous solution, crosses and filters insoluble impurity, obtains the filtrate of clarification;
The filtrate of clarification is sent to underpressure distillation device and carries out inspissation, eject cooling, crystallization when solution inspissation reaches and only remains nine crystal water, obtain non-hydrate sodium metasilicate crystal product.
Its chemical equation is:
MgO+2HCl＝MgCl
2+H
2O
SiO
2+Na
2CO
3+9H
2O＝Na
2SiO
3·9H
2O+CO
2↑
The invention has the beneficial effects as follows: the again pollution waste material of the present invention to boron mud waste material processes, pass through HCl treatment, generate the hydrate of magnesium chloride, filter, obtain silicon-dioxide filter residue, by silicon-dioxide filter residue and sodium carbonate process, generate the non-hydrate sodium metasilicate aqueous solution, remove insoluble impurity, the filtrate of clarification is sent to underpressure distillation device and carries out inspissation, eject cooling, crystallization when solution inspissation reaches and only remains nine crystal water, obtain non-hydrate sodium metasilicate crystal product, therefore, be impeccable with regard to the purity of product, quality also reaches a standard.The again pollution waste material of enterprise to boron mud waste material fully utilizes; obtain non-hydrate sodium metasilicate; turn waste into wealth; improve the ability of enterprise's deep processing; to enterprise development, there is very large pushing effect, while improvement chemical solids waste material, the requirement of environment protection can be met; can also create very large economic benefit to enterprise, be the model of the chemical industry comprehensive regulation and utilization.
Embodiment
Embodiment 1, a kind of method utilizing useless boron sludge to prepare the inclined silicon of nine water described in the present embodiment, comprises the steps:
Get 500 kilograms of boron mud (silicon-dioxide accounts for 20%, and magnesium oxide accounts for 38%) to react, by boron mud steam heating to 59 ~ 81 degree, maintain 1 ~ 2 hour, then dry with whizzer, realize solid-liquor separation, obtain filtrate and filter cake boron mud, filtrate sends to deep processing separately;
Filter cake boron mud (magnesium oxide meter) and hydrochloric acid are reacted in corrosion resistant first reactor with pure mass ratio 1: 1.83, blowing slowly, stirring issues biochemical reaction, reaction generates the hydrate of magnesium chloride, other components generate calcium chloride and a small amount of Manganous chloride tetrahydrate, the hydrate of magnesium chloride is filtered, obtain filtrate and the silicon-dioxide filter residue of clarification, the filtrate of clarification sends to other deep processing;
React in the second airtight reactor by silicon-dioxide filter residue and sodium carbonate with pure mass ratio 1: 1.74, under heating, pressurization and the condition that slowly stirs, reaction generates the non-hydrate sodium metasilicate aqueous solution, crosses and filters insoluble impurity, obtains the filtrate of clarification;
The filtrate of clarification is sent to underpressure distillation device and carries out inspissation, eject cooling, crystallization when solution inspissation reaches and only remains nine crystal water, obtain 466.2 kilograms of non-hydrate sodium metasilicate crystal products.
Embodiment 2, a kind of method utilizing useless boron sludge to prepare the inclined silicon of nine water described in the present embodiment, comprises the steps:
Get 500 kilograms of boron mud (silicon-dioxide accounts for 20%, and magnesium oxide accounts for 38%) to react, by boron mud steam heating to 59 ~ 81 degree, maintain 1 ~ 2 hour, then dry with whizzer, realize solid-liquor separation, obtain filtrate and filter cake boron mud, filtrate sends to deep processing separately;
Filter cake boron mud (magnesium oxide meter) and hydrochloric acid are reacted in corrosion resistant first reactor with pure mass ratio 1: 2.03, blowing slowly, stirring issues biochemical reaction, reaction generates the hydrate of magnesium chloride, other components generate calcium chloride and a small amount of Manganous chloride tetrahydrate, the hydrate of magnesium chloride is filtered, obtain filtrate and the silicon-dioxide filter residue of clarification, the filtrate of clarification sends to other deep processing;
React in the second airtight reactor by silicon-dioxide filter residue and sodium carbonate with pure mass ratio 1: 1.94, under heating, pressurization and the condition that slowly stirs, reaction generates the non-hydrate sodium metasilicate aqueous solution, crosses and filters insoluble impurity, obtains the filtrate of clarification;
The filtrate of clarification is sent to underpressure distillation device and carries out inspissation, eject cooling, crystallization when solution inspissation reaches and only remains nine crystal water, obtain 519.8 kilograms of non-hydrate sodium metasilicate crystal products.
Embodiment 3, a kind of method utilizing useless boron sludge to prepare the inclined silicon of nine water described in the present embodiment, comprises the steps:
Get 500 kilograms of boron mud (silicon-dioxide accounts for 20%, and magnesium oxide accounts for 38%) to react, by boron mud steam heating to 59 ~ 81 degree, maintain 1 ~ 2 hour, then dry with whizzer, realize solid-liquor separation, obtain filtrate and filter cake boron mud, filtrate sends to deep processing separately;
Filter cake boron mud (magnesium oxide meter) and hydrochloric acid are reacted in corrosion resistant first reactor with pure mass ratio 1: 1.63, blowing slowly, stirring issues biochemical reaction, reaction generates the hydrate of magnesium chloride, other components generate calcium chloride and a small amount of Manganous chloride tetrahydrate, the hydrate of magnesium chloride is filtered, obtain filtrate and the silicon-dioxide filter residue of clarification, the filtrate of clarification sends to other deep processing;
React in the second airtight reactor by silicon-dioxide filter residue and sodium carbonate with pure mass ratio 1: 1.54, under heating, pressurization and the condition that slowly stirs, reaction generates the non-hydrate sodium metasilicate aqueous solution, crosses and filters insoluble impurity, obtains the filtrate of clarification;
The filtrate of clarification is sent to underpressure distillation device and carries out inspissation, eject cooling, crystallization when solution inspissation reaches and only remains nine crystal water, obtain 412.6 kilograms of non-hydrate sodium metasilicate crystal products.
The above is only three preferred embodiments of the present invention, is not used for limiting the present invention, and its similar embodiments all, all should be covered by the protection domain of patent of the present invention.
Claims (1)
1. utilize useless boron sludge to prepare a method for the inclined silicon of nine water, it is characterized in that comprising the steps: by boron mud steam heating to 59 ~ 81 degree, maintain 1 ~ 2 hour, then dry with whizzer, realize solid-liquor separation, obtain filtrate and filter cake boron mud, filtrate sends to deep processing separately; Filter cake boron mud and hydrochloric acid are reacted in corrosion resistant first reactor with pure mass ratio 1: 1.62 ~ 2.04, blowing slowly, stirring issues biochemical reaction, reaction generates the hydrate of magnesium chloride, other components generate calcium chloride and a small amount of Manganous chloride tetrahydrate, the hydrate of magnesium chloride is filtered, obtain filtrate and the silicon-dioxide filter residue of clarification, the filtrate of clarification sends to other deep processing; Silicon-dioxide filter residue and sodium carbonate are reacted in the second airtight reactor with pure mass ratio 1: 1.53 ~ 1.95, under the condition of heating, stirring of pressurizeing and blow slowly, reaction generates the non-hydrate sodium metasilicate aqueous solution, crosses and filters insoluble impurity, obtains the filtrate of clarification; The filtrate of clarification is sent to underpressure distillation device and carries out inspissation, eject cooling, crystallization when solution inspissation reaches and only remains nine crystal water, obtain non-hydrate sodium metasilicate crystal product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410478025.2A CN105502425A (en) | 2014-09-12 | 2014-09-12 | Method for preparing sodium metasilicate nonahydrate by using waste boron mud residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410478025.2A CN105502425A (en) | 2014-09-12 | 2014-09-12 | Method for preparing sodium metasilicate nonahydrate by using waste boron mud residue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105502425A true CN105502425A (en) | 2016-04-20 |
Family
ID=55710811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410478025.2A Pending CN105502425A (en) | 2014-09-12 | 2014-09-12 | Method for preparing sodium metasilicate nonahydrate by using waste boron mud residue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105502425A (en) |
-
2014
- 2014-09-12 CN CN201410478025.2A patent/CN105502425A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102267713B (en) | Method for producing high-quality light calcium carbonate by ammonium salt circulation process | |
| CN103342365B (en) | A kind of siliceous mineral working method | |
| CN101555017A (en) | Multi-grade comprehensive utilization technology of fluoride-contained waste acid in phosphating industry | |
| CN103787421B (en) | Comprehensive utilization method of sylvine-containing rock | |
| CN103303974B (en) | Method for recycling waste silicon slag discharged in production of zirconyl chloride | |
| CN105883864A (en) | Method for producing basic magnesium carbonate from boron mud waste material | |
| CN105502425A (en) | Method for preparing sodium metasilicate nonahydrate by using waste boron mud residue | |
| CN105502443A (en) | Method of producing magnesium nitrate hyperhydrate with boron mud waste material | |
| CN110304608B (en) | Method for preparing ozone and by-product phosphoric acid by liquid-phase oxidation of phosphorus sludge | |
| CN105399104A (en) | Method for preparing water glass by using boron mud residue | |
| CN105502412A (en) | Method for producing solid silicic acid by using waste boron mud residue | |
| CN102167329A (en) | Method for preparing solid silicic acid from filter residue of boric sludge | |
| CN105883840A (en) | Method for producing boron fluoride and hydrochloric acid from boron mud waste liquid | |
| CN105883831A (en) | Method for preparing sodium metasilicate pentahydrate from waste boron mud filter residues | |
| CN105883832A (en) | Method for preparing anhydrous sodium metasilicate from waste boron mud filter residues | |
| CN102167339A (en) | Method for preparing sodium metasilicate anhydrous from filter residue obtained by treating boric sludge | |
| CN102167341A (en) | Method for preparing sodium metasilicate nonahydrate from filter residue obtained by treating boric sludge | |
| CN102167342A (en) | Method for preparing water glass from filter residues of boric sludge | |
| CN104445210A (en) | Preparation method of sodium fluosilicate | |
| CN102167340A (en) | Method for preparing pentahydrate sodium metasilicate by treating filter residue with boric sludge | |
| CN104016415B (en) | By the comprehensive utilization production method of hydrochloric acid method Production of Artificial Rutile waste liquid | |
| CN103818914A (en) | Method for preparing sodium alumino silicate through decomposing feldspar | |
| CN102115104A (en) | Method for co-production of magnesium nitrate anhydride and calcium hydroxide/manganese hydroxide from boron slag | |
| CN105417558A (en) | Method for producing anhydrous magnesium sulfate by boric sludge wastes | |
| CN102219240A (en) | Method for cogenerating calcium hydroxide and manganese hydroxide by high magnesium nitrate hydrate prepared by boric sludge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160420 |