CN1076426A - A kind of novel method of from magnesia and bittern, extracting light magnesium oxide - Google Patents
A kind of novel method of from magnesia and bittern, extracting light magnesium oxide Download PDFInfo
- Publication number
- CN1076426A CN1076426A CN 92101809 CN92101809A CN1076426A CN 1076426 A CN1076426 A CN 1076426A CN 92101809 CN92101809 CN 92101809 CN 92101809 A CN92101809 A CN 92101809A CN 1076426 A CN1076426 A CN 1076426A
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- China
- Prior art keywords
- magnesia
- bittern
- magnesium oxide
- light
- pine
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- 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.)
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/24—Magnesium carbonates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The invention belongs to from magnesia and bittern, extract the method for light magnesium oxide, Magnesium Carbonate Light 41-45, not needing it is characterized in that the power saving of steam and spraying, the direct loosening method of province's coal, the product purity height, its technology is simple, and is easy and simple to handle, and cost is low, the efficient height.
Description
The invention belongs to worker's byproduct manufacture field, specifically, is be raw material with magnesia and bittern (bittern), do not need steam and spraying power saving, economize coal directly play pine, the novel method of extraction light magnesium oxide.
Retrieve, consult the existing literature data as can be known.At present, about concluding, mainly contain following three kinds of methods from magnesia and bittern extraction light magnesium oxide method:
One, bittern (need handle through NaClO sometimes) preheating → add yellow soda ash → precipitation → suction filtration → precipitation to play the soda ash method that pine → precipitation → oven dry → calcination becomes light magnesium oxide with steam.
Two, magnesia acidleach → press filtration → add yellow soda ash → precipitation → suction filtration → precipitation plays pine → precipitation → oven dry → calcination with steam and becomes light magnesium oxide.
Three, anthracite, Wingdale → calcining → CaO → add water become Ca(OH)
2→ add bittern → precipitation → feeding CO
2Play pine (and heating) → precipitation → oven dry → calcination and become the charring or the calcification method of light magnesium oxide.
These extracting method, exist main drawback have following some:
1. equipment complexity, investment are greatly, process step is complicated, the rate of recovery is low, cost is high.
2. power consumption in the leaching process, consumption coal.
3. contaminated wastewater environment.
Purpose of the present invention just provides that a kind of equipment is simple, less investment, province's coal, power saving directly play the Technology of pine, in order to producing light magnesium oxide, and reclaims byproduct from waste water.
Extracting method of the present invention is achieved like this, and is containing Mg
2+Solution in add after the carbon ammonium directly plays pine, separation, washing, oven dry, calcination thing are light magnesium oxide, its concrete technical process as shown in drawings.
Among the figure (1) be the technical process explanation of raw material with the magnesia:
1. magnesia 2. leaches 3,7,11. centrifugal (or press filtrations)
4,5. slag of 8,13. filtrates (wherein 8,3 filtrates return leach use)
6. directly play pine 9,12. precipitations 10. washings 14. oven dry
15. Magnesium Carbonate Light 41-45 16. calcinations 17. light magnesium oxides
18. make fertilizer
Among the figure (2) be the technical process explanation of raw material with bittern:
1. it is centrifugal that bittern 2. directly plays pine 3,7,14,17.
4,8,15,18. precipitations (15 is NaCl, and 18 are nitrogen potassium mixing fat)
5,9,16,19. filtrates (19 for carrying the bromine raw material) 10. dry
11. Magnesium Carbonate Light 41-45 12. calcinations 13. light magnesium oxides
Below in conjunction with embodiment, specifically set forth technological process of the present invention:
1. with the magnesia raw material
Magnesia 100Kg is added 40% spent acid 300Kg leach (back pH～6 are leached in control), directly play quiet the putting of pine (regulating pH7.5～8.0) with the carbon ammonium, deposition rate reaches 80%, by centrifugal, wash, dry Magnesium Carbonate Light 41-45 (meet the I and II standard of HGI-516-67, rank is decided by operational condition).With the magnesiumcarbonate calcination, just can obtain fine light magnesium oxide (the special primary standard that meets HGI-324-77), simultaneously, waste liquid can be made nitrogenous fertilizer (favourable paddy growth).
2. with bittern raw material
With bittern (30B
' e) 60Kg adds carbon ammonium 10Kg and directly play quiet the putting of pine (regulate pH7.5～8.0), deposition rate reaches 80%, by centrifugal, wash, dry Magnesium Carbonate Light 41-45 (meeting the HGI-516-67 quality standard), with its calcination, just obtain the fine light magnesium oxide, simultaneously, the further processing of waste liquid can be got nitrogen potassium mixes fertilizer and carries Br
2Concentrated solution.
Adopt the extracting method of light magnesium carbonate of the present invention and light magnesium oxide compared with prior art, have following advantage:
1. technology is simple, easy and simple to handle;
2. unique loose measure method that directly rises is arranged, and is precipitation agent with the carbon ammonium, and production cost is low, good product quality;
3. waste water can fully utilize, and is raw material with bittern particularly, and the nitrogen potassium that can make present agriculture production urgent need mixes fertilizer and provides chemical industry to be badly in need of Br
2Concentrated solution.Simultaneously, reduced environmental pollution, the extracting method that social benefit and economic benefit are all good.
Claims (4)
1, a kind of from magnesia and bittern method for extracting light magnesia, lixiviate arranged, play pine, precipitation, separate, concentrate, technologies such as oven dry, calcination.Extracting method of the present invention is characterized in that containing soluble M g
2+In the solution, after adding the carbon ammonium and directly playing pine,, be light magnesium oxide through separation, washing, oven dry, firing product.
2, extracting method according to claim 1, its spy is to add the carbon ammonium and regulates pH7.5～8.5, directly play pine after, through separate, washing, oven dry product be Magnesium Carbonate Light 41-45.
3, according to claim 1 and 2 described extracting method, it is characterized in that available spent acid has replaced acidleach to carry magnesia, spent acid can adopt hydrochloric acid and sulfuric acid, and optimal selection is a sulfuric acid.
4, according to claim 1,2 and 3 described extracting method, it is characterized in that with bittern being raw material, can produce nitrogen potassium and mix fertilizer, magnesium ammonium phosphate and contain Br
2Byproducts such as concentrated solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92101809 CN1076426A (en) | 1992-03-14 | 1992-03-14 | A kind of novel method of from magnesia and bittern, extracting light magnesium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92101809 CN1076426A (en) | 1992-03-14 | 1992-03-14 | A kind of novel method of from magnesia and bittern, extracting light magnesium oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1076426A true CN1076426A (en) | 1993-09-22 |
Family
ID=4939319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92101809 Pending CN1076426A (en) | 1992-03-14 | 1992-03-14 | A kind of novel method of from magnesia and bittern, extracting light magnesium oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1076426A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051748C (en) * | 1996-07-15 | 2000-04-26 | 国家建筑材料工业局地质研究所 | Preparation of ultra-light magnesium oxide using blocky shepardite |
| CN100333999C (en) * | 2005-09-06 | 2007-08-29 | 山东大学 | Cleaning type preparation method for medicinal basic magnesium carbonate |
-
1992
- 1992-03-14 CN CN 92101809 patent/CN1076426A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051748C (en) * | 1996-07-15 | 2000-04-26 | 国家建筑材料工业局地质研究所 | Preparation of ultra-light magnesium oxide using blocky shepardite |
| CN100333999C (en) * | 2005-09-06 | 2007-08-29 | 山东大学 | Cleaning type preparation method for medicinal basic magnesium carbonate |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |