CN1010674B - Method of preparation of soft potassium-magnesium alum by solid phase reaction - Google Patents
Method of preparation of soft potassium-magnesium alum by solid phase reactionInfo
- Publication number
- CN1010674B CN1010674B CN88101878A CN88101878A CN1010674B CN 1010674 B CN1010674 B CN 1010674B CN 88101878 A CN88101878 A CN 88101878A CN 88101878 A CN88101878 A CN 88101878A CN 1010674 B CN1010674 B CN 1010674B
- Authority
- CN
- China
- Prior art keywords
- schoenite
- solid phase
- phase reaction
- present
- preparation
- 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.)
- Expired
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/12—Preparation of double sulfates of magnesium with sodium or potassium
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Cosmetics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention belongs to a technological method for producing schoenite which is used as a raw material for preparing high-quality chlorine-free potash fertilizer (potassium sulfate). In the present invention, carnallite, potassium chloride and mirabilite are used for preparing schoenite by solid phase reaction according to the molar ratio of a phase diagram after being mixed, wherein the reaction equation is: 2Na2SO4.10H2O + KCl. MgCl2.6H2O + KCl = K2SO4. MgO/SO4.6H2O + 4NaCl + 20H2O. The present invention has the advantages of simple production technology, low energy consumption, low cost and high efficiency.
Description
The invention belongs to the schoenite producing and manufacturing technique.
Schoenite is a raw material of producing high-quality chlorideless potassic fertilizer vitriolate of tartar.At present external produce vitriolate of tartar the operational path of industrialization comparative maturity have: one, be with Japan representative be the method for fusing, be about to Repone K and sulfuric acid according to a certain ratio, heating fuses.Data is seen CIM BULL, 1971, v64, No705, p66.Two, all adopt the solution conversion method with the Soviet Union, East Germany and West Germany, Repone K and sal epsom are changed into schoenite in solution, decompose schoenite then and produce vitriolate of tartar.Data is seen Kali und Steinsalz, 1970, Bd, S289.Three, U.S.'s Great Salt lake's mineral and chemical company obtain containing sodium-chlor with the evaporation of crude salt lake water; Kainite, the mixture of epsom salt and carnallitite, the factory that evolves then is by (1) flotation sodium-chlor, and (2) are converted into schoenite with sylvite, and (3) add the water decomposition schoenite, and crystallisation by cooling is produced vitriolate of tartar.Data is seen PHOSPH POTAS, 1971, and No52, p36 and PHOSPH POTAS, 1972, No56, p39.Domesticly just be the conversion method that carries out at solution in the method for laboratory study.Data is published in " section's journal " on March 4th, 1988 " salt lake, Qinghai institute releases the novel process of extracting vitriolate of tartar from the salt lake, Qinghai ".
Above method complex process, so the energy consumption height is the production cost height.
The objective of the invention is to: produce schoenite by solid state reaction, production technique is simplified, energy consumption is low, reduces cost, and raises the efficiency.
The present invention uses the phasor principle with carnallitite, after Repone K and saltcake (mirabilite hydrate or thenardite) are mixed in proportion, by solid state reaction, produces schoenite.According to the phasor principle, at K, Na, Mg/CL, SO
4-H
2On the Ye Naike phasor of O penton system (seeing accompanying drawing),, carnallitite (Car)+sylvite (Sy)+saltcake (M or T) is mixed, total composition of mixture is dropped on the solidus (Pi) of schoenite by shouldering bar and center-of-gravity rule.Mixture is by solid state reaction, and dehydration is transformed into new thing mutually to carnallitite with saltcake, i.e. schoenite+halite.Reaction equation is: 2Na
2SO
410H
2O+KCLMgCL
26H
2O+KCL=K
2SO
4MgSO
46H
2O+4NaCL+20H
2O.At penton is in the phasor, and temperature range and phase region that schoenite exists are very big, therefore at low temperature (as 0 ℃) to the natural condition of high temperature (as 40 ℃), the above-mentioned solid phase reaction can both very fast realization.
The present invention can realize like this, raw material is mixed in proportion stirring after, as doing coal briquette, make bead or little cake, and make its seasoning, after waiting to do bath, reaction is promptly finished.The mixture of the schoenite that obtains and sodium-chlor is carried out flotation just can obtain schoenite.(flotation has sophisticated processing method)
Characteristics of the present invention are: the reaction of producing schoenite is not to carry out in solution, therefore compared with prior art has following advantage:
1, do not need to deposit the salt pond or the container of bittern, thereby, facility investment can be saved greatly.
2, saved technological processs such as crystallization, solid-liquid separation, production technique is simple.
3, in the reaction process, except that utilizing sun power, do not need other energy.
4, speed of response is fast, and is with short production cycle, the efficient height.
Accompanying drawing is: K, Na, Mg/CL, SO
4-H
2The Ye Naike phasor of O penton system
Solid phase becomes branch
The M saltcake
The T thenardite
The Car carnallitite
The Sy sylvite
The embodiment I: testing sequence and effect are carried out in test at room temperature (15-18 ℃):
1. take by weighing 200 gram carnallitites, 53.2 gram Repone K, 136 gram thenardites (powdery) and 154.3 gram mirabilite hydrates.
2. with above mixing of materials, grind, be pressed into the pellet of coal briquette size.
3. after 3-4 hour, pellet is wetting, but flowing liquid not.
4. dry naturally, product is through being accredited as the thin crystalline substance of schoenite+salt two days later, original phase (optic angle stone, saltcake, sylvite) completely dissolve, and product weighs 457 grams.
[notes]: the weight ratio of schoenite and salt is 1.722: 1 in the product.The embodiment II: test is carried out under 0-5 ℃ of condition: 1. take by weighing carnallitite 200 grams, Repone K 53.2 grams, ten moisture saltcake, 463 grams.
2. above mixing of materials is ground, become the cake shape less than 10 minutes materials, identify solid phase after 45 minutes, having seen has a large amount of salt (NaCl) and schoenite fine crystals to form
3. material is dried naturally at indoor stand cake, dry two days later, product is the tiny salt of the bigger schoenite+crystal of crystal, saltcake, carnallitite and sylvite completely dissolve, and product weighs 460 grams.
The embodiment III: test at room temperature (16-18 ℃) is carried out:
1. take by weighing carnallitite 200 grams, Repone K 53.2 grams, thenardite (powder) 204.2 grams
2. above mixing of materials is ground and spray 150 ml waters, material can be bondd, and make pellet.
3. pellet is in indoor seasoning, and product is schoenite+salt two days later, and product weighs 459 grams.
Claims (1)
1, a kind ofly produces the method for schoenite, it is characterized in that with carnallitite, Repone K and saltcake, in molar ratio: KClMgCl by solid state reaction
26H
2O: KCl: 2Na
2SO
410H
2O=1: under 0 ℃～40 ℃ temperature condition mix at 1: 2,, obtain the mixture of schoenite and sodium-chlor, obtain schoenite through flotation separation by solid state reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88101878A CN1010674B (en) | 1988-04-12 | 1988-04-12 | Method of preparation of soft potassium-magnesium alum by solid phase reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88101878A CN1010674B (en) | 1988-04-12 | 1988-04-12 | Method of preparation of soft potassium-magnesium alum by solid phase reaction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1038799A CN1038799A (en) | 1990-01-17 |
| CN1010674B true CN1010674B (en) | 1990-12-05 |
Family
ID=4831922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88101878A Expired CN1010674B (en) | 1988-04-12 | 1988-04-12 | Method of preparation of soft potassium-magnesium alum by solid phase reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1010674B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065213C (en) * | 1998-05-21 | 2001-05-02 | 中国科学院青海盐湖研究所 | Process for preparing soft leonite |
| CN104261940B (en) * | 2014-09-24 | 2016-08-24 | 中国科学院青海盐湖研究所 | A kind of preparation method of potassic-magnesian fertilizer |
| CN109354042A (en) * | 2018-11-22 | 2019-02-19 | 青海蓝湖善成生物技术有限公司 | The preparation method and picromerite feed of picromerite |
-
1988
- 1988-04-12 CN CN88101878A patent/CN1010674B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1038799A (en) | 1990-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |