CN1548371A - Floatation process of preparing potassium sulfate - Google Patents
Floatation process of preparing potassium sulfate Download PDFInfo
- Publication number
- CN1548371A CN1548371A CNA031342892A CN03134289A CN1548371A CN 1548371 A CN1548371 A CN 1548371A CN A031342892 A CNA031342892 A CN A031342892A CN 03134289 A CN03134289 A CN 03134289A CN 1548371 A CN1548371 A CN 1548371A
- Authority
- CN
- China
- Prior art keywords
- flotation
- tartar
- vitriolate
- saltcake
- carnallitite
- 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.)
- Granted
Links
Images
Abstract
The present invention is one method of preparing potassium sulfate with salt lake mirabilite and carnallite resource. The preparation process includes dissolving mirabilite and eliminating insoluble matter; reacting mirabilite solution with carnallite at normal temperature to obtain schoenite mixture salt slurry; adding floating agent into the slurry and stirring in a floating machine to eliminate sodium and mud and obtain ore concentrate and tailings as high-grade schoenite mixture salt; mixing schoenite mixture salt with water and secondary decomposition in reactor to separate potassium sulfate product; and water washing the floated ore concentrate to obtain industrial sodium chloride salt. The present invention is one simple closed-loop process at normal temperature and normal pressure and no waste pollution.
Description
Technical field
The present invention relates to a kind of method of producing vitriolate of tartar, particularly utilize saltcake, carnallitite resource flotation process to produce the method for vitriolate of tartar.
Background technology
There are abundant chloride type salt lake resources and sulfate type salt lake resource in Qinghai.The chloride type salt lake resources in Qinghai mainly is stored at Cha Er sweat salt lake, and wherein the sylvite reserves are in Repone K about 1.5 hundred million tons.The chloride type salt lake brine is in the process of salt pan Exposure to Sunlight, and potassium is mainly separated out with the form of carnallitite, and carnallitite carries out cold decomposition, flotation more then, thereby realizes Repone K and obtain Repone K separating of sodium-chlor.Qinghai sulfate type salt lake resource reserve is bigger than chloride type salt lake resources reserves, and the dispersion that distributes, and the reserves of mirabilite resource are several times as much as the reserves of Repone K in the sulfate type salt lake of Qinghai.The utilization of mirabilite resource at present only limits to produce anhydrous nitre---and Sodium sulfate anhydrous.min(99) is sold, deep processing and utilization still belongs to blank, though with saltcake and Repone K is that raw material is produced vitriolate of tartar genus maturation process, but because of the raw materials cost of raw material Repone K and saltcake higher, byproduct sodium-chlor slack market has limited the development of this technology.To produce the raw material-carnallitite of Repone K and sulfate type salt lake saltcake that produce winter as the raw material of producing vitriolate of tartar, produce vitriolate of tartar by the similar technology approach of producing Repone K, make the potassium resource in the chloride type bittern be converted into vitriolate of tartar, product is appreciated, and is a better approach of chloride type salt lake resources and sulfate type salt lake comprehensive utilization of resources.Vitriolate of tartar is a kind of important chlorideless potassic fertilizer, mainly be applied to tobacco, fruit, potato etc. and avoid the cash crop and the culture fishery of chlorine, in crop-planting or aquaculture, use vitriolate of tartar and not only can increase output, can also improve the quality of crop or product, thereby obtain bigger economic benefit.China potassium resource lacks, thereby has limited the development with potash fertilizer industry of using of potash fertilizer, causes nitrogen in China crop, phosphorus, the serious mistake of potassium ratio to be withered.China's salt lake resources is abundant, contains this abundant potassium resource in the salt lake, greatly develops the potash fertilizer cause, and the especially exploitation of potassium product is very important.
The method of producing vitriolate of tartar in the world can divide three major types into haply: the first kind is to utilize salt lake brine to produce vitriolate of tartar.Utilize sun power Exposure to Sunlight concentrated brine precipitated sodium chloride, mother liquor further evaporation is separated out kainite, kainite is transported into factory process and becomes schoenite, schoenite adds the Repone K metathesis and changes into vitriolate of tartar, and the vitriolate of tartar amount that this production method provides accounts for the 10%-15% of world's vitriolate of tartar ultimate production; Second class is that the Repone K conversion method is produced vitriolate of tartar, 75%: the three class that the vitriolate of tartar that this production method provides accounts for world's vitriolate of tartar ultimate production is to utilize the sulfuric acid salt mine to produce vitriolate of tartar, and the vitriolate of tartar that this method is produced accounts for about 10% of world's vitriolate of tartar ultimate production.
Because China's potassium resource deficiency makes the vitriolate of tartar development be subjected to certain influence.Order at present China domestic vitriolate of tartar manufacturing enterprise have 40 surplus family, the Technology of employing is mainly vitriol double decomposition, graceful extra large mother law, forms the method for putting etc.
Summary of the invention
The object of the present invention is to provide a kind of method of utilizing saltcake and carnallite floatation legal system to get vitriolate of tartar, this method helps the comprehensive utilization of China's salt lake potassium resource and vitriol resource.
The object of the present invention is achieved like this:
(1) will produce the needed saltcake dissolving of vitriolate of tartar with 20-100 ℃ hydrothermal solution earlier, the elimination insolubles, wherein the weight concentration of mirabilite clear liquid is 20-50%;
(2) get mirabilite clear liquid and carnallitite and transform 10-200min at normal temperatures, change into schoenite mixed salt slip; Wherein the weight ratio of mirabilite clear liquid and carnallitite is 1: (1-10);
(3) press the adding bulk flotation agent that 20-1000ml/T measures again in the slip of step (2), stir 2-60min in adjusting groove, adjust and finish slip flotation in flotation cell, realization flotation concentrate sodium-chlor separates with the flotation tailings soft potassium mixed salt; Then the flotation tailings filtering separation is obtained solid phase, solid phase is directly added water normal temperature again and decompose, just can obtain the vitriolate of tartar slip, promptly get the wet product of vitriolate of tartar after slip separates, wherein the weight ratio of solid phase and water is 1: (0.2-2.5).
The present invention has following advantage compared to existing technology:
This institute applied for the method for " is that raw material is produced vitriolate of tartar with carnallitite and saltcake ".The method that is adopted in the patent of former application is carried out the separation of sodium-chlor with thermosoling.It is a kind of method of highly energy-consuming.
The present invention is that raw material adopts flotation process to separate sodium-chlor to produce vitriolate of tartar with carnallitite and saltcake, its raw materials cost is at 700 yuan/ton, with available technology adopting Repone K and saltcake is that the raw materials cost that raw material is produced vitriolate of tartar is compared at 1500 yuan/ton, and its cost reduces by more than 50; And its technological process be that raw material is produced vitriolate of tartar and compared simplyr with saltcake and Repone K, manufacturing cost is lower, so this technology is being that raw material is produced in the process of vitriolate of tartar and had the better economic prospect with bittern potassium resource and vitriol resource.
The present invention utilizes the bulk flotation agent to carry out flotation and compares with single medicament, has improved the potassium rate of recovery and grade.
Description of drawings
Fig. 1 is the process flow sheet that the present invention produces vitriolate of tartar.
Concrete embodiment
Is that the example that raw material is produced vitriolate of tartar is described in further detail invention below in conjunction with Fig. 1 with the carnallitite of Qinghai Chaerhan salt lakes and Wu Tumei benevolence saltcake ore deposit.
Getting content is 95% saltcake 100g, with 20-80 ℃ of hydrothermal solution 130g dissolving saltcake.In filtering clear liquid 230g, add carnallitite (wherein potassium content is 8-12%) 600g and transform 20-150min at 20-60 ℃, finish the bulk flotation agent flotation 2-50min that adds 0.5ml in the slip toward transforming, obtain the flotation concentrate (wherein sodium chloride content 60-100%) of 250g, and obtain the flotation tailings (wherein sodium chloride content 4-10%) of 250g, this flotation tailings obtains soft potassium mixed salt ore deposit 250g through solid-liquid separation, the hot water 150g that in the soft potassium mixed salt ore deposit, adds 20-60 ℃ then, transform 20-150min, conversion is finished slip and is separated, obtain the wet product vitriolate of tartar of 120g (Cl≤2% wherein, K
2SO
4〉=90% wet basis).Wherein the bulk flotation agent is made up of alkyl morpholine flotation agent and di-alcohols flotation aid, and the volume ratio of alkyl woods flotation agent and di-alcohols flotation aid is 13: 1.
Claims (8)
1, a kind of is the method that the raw material flotation process is produced vitriolate of tartar with saltcake, carnallitite, comprises the steps:
(1) with the saltcake dissolving, the insolubles of removing wherein obtains mirabilite clear liquid, and its weight concentration is 20-50%;
(2) mirabilite clear liquid in the step (1) is mixed with carnallitite, transform and generate soft potassium magnesium vanadium mixed salt slip; Wherein the weight ratio of mirabilite clear liquid and carnallitite is 1: (1-10);
(3) soft potassium magnesium vanadium mixed salt slip and the bulk flotation agent with step (2) mixes, and then slip imported flotation machine and carries out flotation, thereby sodium-chlor is separated with soft potassium magnesium vanadium mixed salt, obtains flotation concentrate and flotation tailings; The bulk flotation medicament that adds 20-1000ml in the soft potassium magnesium vanadium mixed salt slip wherein per ton; Described flotation concentrate is a sodium-chlor; After flotation tailings carried out solid-liquid separation, branch solved vitriolate of tartar after its solid phase added water, and the weight ratio of solid phase and water is 1: (0.2-2.5).
2, as claimed in claim 1 is the method that the raw material flotation process is produced vitriolate of tartar with saltcake, carnallitite, it is characterized in that step (3) floatation process adopt one thick, sweep, the closed circuit flotation flowsheet of an essence.
3, as claimed in claim 1 is the method that the raw material flotation process is produced vitriolate of tartar with saltcake, carnallitite, it is characterized in that: the bulk flotation agent in the described step (3) is the mixture of sodium flotation agent and flotation aid, and wherein the volume ratio of sodium flotation agent and flotation aid is (20-6): 1.
4, as claimed in claim 3 is the method that the raw material flotation process is produced vitriolate of tartar with saltcake, carnallitite, it is characterized in that the naphthenic hydrocarbon that contains N, O of described sodium flotation agent for the band alkyl branches, and described naphthenic hydrocarbon is selected from a kind of in six-ring, tetra-atomic ring, the octatomic ring, and the carbon chain lengths of alkyl branches is C8-C20.
5, as claimed in claim 3 is the method that the raw material flotation process is produced vitriolate of tartar with saltcake, carnallitite, it is characterized in that described flotation aid is straight chain hydrocarbon or branched alkanes flotation aid, and its carbon chain lengths is C8-C24.
6, as claimed in claim 1 is the method that the raw material flotation process is produced vitriolate of tartar with saltcake, carnallitite, it is characterized in that the potassium sulfate mother liquid that is produced behind the solid phase decomposition vitriolate of tartar in the described step (3) returns recycle in the step (2).
7, as claimed in claim 1 is the method that the raw material flotation process is produced vitriolate of tartar with saltcake, carnallitite, after it is characterized in that flotation tailings separates in the described step (3), the further processing of the also available potassium sulfate mother liquid of the solid phase of gained can obtain high-grade soft potassium magnesium vanadium mixed salt ore deposit.
8, as claimed in claim 1 is the method that the raw material flotation process is produced vitriolate of tartar with saltcake, carnallitite, it is characterized in that: vitriolate of tartar is produced procedure division and is adopted the saltcake dissolving to get the method for clear liquid desilt, and has removed Grinding procedure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03134289 CN1281496C (en) | 2003-05-19 | 2003-05-19 | Floatation process of preparing potassium sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03134289 CN1281496C (en) | 2003-05-19 | 2003-05-19 | Floatation process of preparing potassium sulfate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1548371A true CN1548371A (en) | 2004-11-24 |
| CN1281496C CN1281496C (en) | 2006-10-25 |
Family
ID=34323154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03134289 Expired - Fee Related CN1281496C (en) | 2003-05-19 | 2003-05-19 | Floatation process of preparing potassium sulfate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1281496C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104016381A (en) * | 2014-05-31 | 2014-09-03 | 陈兆华 | Preparing method of picromerite by adopting mother liquor of potassium sulfate production by conversion method and sodium sulfate as raw materials |
| CN104016379A (en) * | 2014-06-05 | 2014-09-03 | 中国科学院青海盐湖研究所 | Preparation method of potassium sulfate |
| CN104030318A (en) * | 2014-07-01 | 2014-09-10 | 陈兆华 | Methods for preparing potassium chloride and picromerite through carnallite |
| CN106082279A (en) * | 2016-06-21 | 2016-11-09 | 化工部长沙设计研究院 | A kind of be raw material production potassium sulfate with carnallite method |
| CN110198921A (en) * | 2016-12-17 | 2019-09-03 | 死海工程有限公司 | By the method for carnallite and sodium sulphate production sulphate of potash and magesium |
| CN111406131A (en) * | 2017-10-13 | 2020-07-10 | 纽普项目股份有限公司 | System and method for producing potassium sulfate |
-
2003
- 2003-05-19 CN CN 03134289 patent/CN1281496C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104016381A (en) * | 2014-05-31 | 2014-09-03 | 陈兆华 | Preparing method of picromerite by adopting mother liquor of potassium sulfate production by conversion method and sodium sulfate as raw materials |
| CN104016379A (en) * | 2014-06-05 | 2014-09-03 | 中国科学院青海盐湖研究所 | Preparation method of potassium sulfate |
| CN104016379B (en) * | 2014-06-05 | 2016-07-06 | 中国科学院青海盐湖研究所 | A kind of preparation method of potassium sulfate |
| CN104030318A (en) * | 2014-07-01 | 2014-09-10 | 陈兆华 | Methods for preparing potassium chloride and picromerite through carnallite |
| CN104030318B (en) * | 2014-07-01 | 2016-11-09 | 陈兆华 | Method with light halogen potassium chloride made of stones and picromerite |
| CN106082279A (en) * | 2016-06-21 | 2016-11-09 | 化工部长沙设计研究院 | A kind of be raw material production potassium sulfate with carnallite method |
| CN110198921A (en) * | 2016-12-17 | 2019-09-03 | 死海工程有限公司 | By the method for carnallite and sodium sulphate production sulphate of potash and magesium |
| US11306033B2 (en) | 2016-12-17 | 2022-04-19 | Dead Sea Works Ltd. | Process for the production of potassium sulphate and magnesium sulphate from carnallite and sodium sulphate |
| CN111406131A (en) * | 2017-10-13 | 2020-07-10 | 纽普项目股份有限公司 | System and method for producing potassium sulfate |
| CN111406131B (en) * | 2017-10-13 | 2022-10-04 | 纽普项目股份有限公司 | System and method for producing potassium sulfate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1281496C (en) | 2006-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101318845B (en) | Process for preparing potash magnesium sulphate fertilizer with kalium containing sulfate | |
| CN101993256B (en) | Method for preparing agricultural potassium sulfate from potassium-rich rock | |
| CN102502753B (en) | Synthetic method of calcium fluoride | |
| CN104477943B (en) | A kind of method of preparing potassium sulfate | |
| IL176481A (en) | Integrated process for the simultaneous recovery of industrial grade potassium chloride and low sodium edible salt from bittern | |
| CN105367176A (en) | Multi-element comprehensive utilization process for phosphorus-potassium associated ore | |
| CN100503440C (en) | Process of preparing potassium sulfate with potassium containing bittern of magnesium sulfate subtype | |
| CN104016379A (en) | Preparation method of potassium sulfate | |
| CN106517263A (en) | Method of carrying out double decomposition on hydrochloric acid leachate of phosphate tailings to prepare magnesium hydroxide and calcium sulfate | |
| CN106082279B (en) | A kind of method that potassium sulfate is produced using carnallite as raw material | |
| CN107954452B (en) | Brine adding process for mother liquor of potassium chloride production device at low temperature | |
| CN102874851A (en) | Method of utilizing brine to coproduce magnesium hydroxide and calcium sulfate whisker | |
| CN104311190A (en) | Method for producing high concentration chlorine-based composite fertilizer by partially decalcifying hydrochloric acid decomposed phosphorite | |
| CN1281496C (en) | Floatation process of preparing potassium sulfate | |
| CN104230448A (en) | Method for preparing N-P-K (Nitrogen-Phosphorus-Potassium) compound fertilizer by using hydrochloric acid to decompose phosphorite acidified solution | |
| CN102205976A (en) | Recovery method of potassium ions in flotation tailing liquid and tailing | |
| CN101412639B (en) | Method for preparing potash magnesium sulphate fertilizer from potassium-containing solid mine by separation and extraction | |
| CN102703982A (en) | Method for preparing magnesium carbonate trihydrate crystal whisker by utilizing serpentine | |
| CN1255320C (en) | Potassium sulfate preparing process from sulfate-type salt lake bittern | |
| CN111533139B (en) | Method for co-producing potash magnesium sulphate fertilizer, potassium chloride and potassium sulphate | |
| CA2552104A1 (en) | Process for recovery of sulphate of potash | |
| CN107188208B (en) | A method of Shoenite is extracted with the carnallite of containing magnesium sulfate | |
| CN114715926A (en) | Method for cooperative recycling of incineration ash of excess sludge in sewage treatment and seawater desalination brine | |
| CN101293640A (en) | Method for preparing ammonium phosphate salt with hydrochloric acid leaching deficient phosphorus ore | |
| CN107265482B (en) | Method for producing potassium sulfate from magnesium sulfate-meta-chloride type potassium-containing brine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061025 Termination date: 20110519 |