CN101429056A - Process for producing low-chlorine calcium magnesium sulphur formula with sea salt bittern - Google Patents
Process for producing low-chlorine calcium magnesium sulphur formula with sea salt bittern Download PDFInfo
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- CN101429056A CN101429056A CNA2008100722727A CN200810072272A CN101429056A CN 101429056 A CN101429056 A CN 101429056A CN A2008100722727 A CNA2008100722727 A CN A2008100722727A CN 200810072272 A CN200810072272 A CN 200810072272A CN 101429056 A CN101429056 A CN 101429056A
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- magnesium
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- chloride solution
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Abstract
The invention relates to a technology for producing low-chlorine calcium-magnesium-sulfur formula fertilizer by using sea salt bittern, which relates to a technology for producing formula fertilizer, in particular to a technical method for producing the low-chlorine calcium-magnesium-sulfur formula fertilizer by using the sea salt bittern. The technical method comprises the following technological steps: 1) calcium hydroxide is obtained; 2) the calcium hydroxide reacts with a magnesium chloride solution to prepare magnesium hydroxide semi-products containing calcium and chlorine and a calcium chloride solution; 3) the calcium chloride solution reacts with the sea salt bittern to prepare gypsum semi-products containing magnesium and chlorine and a magnesium chloride solution; 4) the magnesium hydroxide semi-products containing calcium and chlorine are prepared into calcium-bearing magnesium hydroxide; 5) gypsum containing magnesium and chlorine is prepared into magnesium-containing gypsum; and 6) the calcium-containing magnesium hydroxide and the magnesium-containing gypsum are mixed according to the proportion to obtain the low-chlorine calcium-magnesium-sulfur formula fertilizer. Compared with other methods for comprehensively utilizing the sea salt bittern, the technical method has the advantages of simple production equipment, convenient technical operation, low energy consumption, small investment, low cost, high economic benefit and so on.
Description
Technical field:
The present invention relates to a kind of fertile production technique of filling a prescription, be specifically related to a kind of processing method of utilizing bittern to produce low-chlorine calcium magnesium sulphur formula fertilizer.
Background technology:
Bittern is the byproduct of preparing salt by working up seawater industry, and stock number is very big, and 1 ton of sea salt of every production just has the bittern product of 0.8-1 cubic meter.Bittern mostly directly flows back to the sea at present, causes the pollution to ocean environment.Along with continuous progress in science and technology, the comprehensive development and utilization of bittern is more and more.At present known mainly is to utilize bittern to produce Repone K, industrial bromine and magnesium chloride and other byproduct.But 1 ton of Repone K of every production need consume 20 tons steam and 1000 kilowatt-hour electricity, causes the Repone K cost to be higher than price, suffers great loss.
Have a lot of enterprises to improve technology yet, utilize bittern to produce other inorganic salt, but these processing method current consumption are big, the economic benefit that is produced is not high, disagrees with the policy of the energy-saving and emission-reduction of current promotion, is not used widely.
Summary of the invention:
The purpose of this invention is to provide a kind of technology of utilizing bittern to produce low-chlorine calcium magnesium sulphur formula fertilizer, it has that production unit is simple, technological operation is simple, less investment, cost are low, the advantage of comprehensive utilization bittern, the economic benefit height that the production process power consumption less, technology is simple, production cost is lower, produced.In order to solve the existing problem of background technology, the present invention adopts following processing step: 1, be mixed in proportion stirring, acquisition calcium hydroxide with calcium oxide content greater than 90% unslaked lime and water; 2, calcium hydroxide is mixed with magnesium chloride solution react magnesium hydroxide work in-process and the calcium chloride solution of producing calcic chlorine; 3, calcium chloride solution is mixed with bittern react, produce the gypsum work in-process and the magnesium chloride solution that contain magnesium chlorine; The magnesium hydroxide work in-process of the calcic chlorine that 4, step 2 is made are done, are obtained the calcic magnesium hydroxide after the fragmentation through press filtration, washing, pouring; 5, the gypsum work in-process that contain magnesium chlorine that step 3 obtained obtain containing magnesite cream after washing, centrifuge dehydration; 6, the magnesite cream that contains that calcic magnesium hydroxide that step 4 is obtained and step 5 obtain mixes in proportion, makes low-chlorine calcium magnesium sulphur formula fertilizer.Raw material is cheap and easy to get among the present invention, the recycle in addition of the whole science of resultant of reaction.The low-chlorine calcium magnesium sulphur formula fertilizer that makes, calcium, magnesium, sulphur content height can improve the yield and quality of fear-chlorion crop greatly.Institute responds and all can carry out at normal temperatures, and it is low to consume energy, the economic benefit height.Utilize bittern to produce low-chlorine calcium magnesium sulphur formula fertilizer, do not have the three wastes, free from environmental pollution, really accomplished cleaner production.The present invention compare with other bittern method of comprehensive utilization have that production unit is simple, technological operation is convenient, energy consumption is low, less investment, low, the economic benefit advantages of higher of cost.
The fertile general limestone powder or ground dolomite and sal epsom of adopting of calcium magnesium sulphur formula mixes, limestone powder is formed by ore reduction, and sal epsom makes through persulfuric acid and magnesium oxide reaction, and this production technique investment is more, production cost is too high, makes this technology promote and is subjected to certain restriction.
Embodiment:
This embodiment adopts following processing step: 1, be higher than 90% unslaked lime and water according to the mixed stirring of 1:2 with calcium oxide content, make aqua calcis; 2, the magnesium chloride of 3.1 cubic metres aqua calcis and 23.1 cubic metres is made magnesium hydroxide and 18.5 cubic metres of calcium chloride solutions of 7.7 cubic metres of calcic chlorine; 3, the bittern of 18.5 cubic metres calcium chloride solution and 7.7 cubic metres (concentration 29 degree) reaction makes 8.5 cubic metres gypsum that contains magnesium chlorine and 17.7 cubic metres magnesium chloride solution; 4, the magnesium hydroxide work in-process of 7.7 cubic metres of calcic chlorine are done, are obtained 0.8 ton of calcic magnesium hydroxide after the fragmentation through press filtration, washing, pouring; 5,8.5 cubic metres of gypsum work in-process that contain magnesium chlorine obtain containing 2 tons of magnesite cream through washing, centrifuge dehydration; 6,0.8 ton of work in-process calcic magnesium hydroxide contains magnesite cream with 1.2 tons of work in-process and mixes in agitator, makes fertile 2 tons of low-chlorine calcium magnesium sulphur formula.
Raw material is cheap and easy to get in this embodiment, the recycle in addition of the whole science of resultant of reaction.The low-chlorine calcium magnesium sulphur formula fertilizer that makes, calcium, magnesium, sulphur content height can improve the yield and quality of fear-chlorion crop greatly.Institute responds and all can carry out at normal temperatures, and it is low to consume energy, the economic benefit height.Utilize bittern to produce low-chlorine calcium magnesium sulphur formula fertilizer, do not have the three wastes, free from environmental pollution, really accomplished cleaner production.This embodiment compare with other bittern method of comprehensive utilization have that production unit is simple, technological operation is convenient, energy consumption is low, less investment, low, the economic benefit advantages of higher of cost.
Calcium contents 〉=10% of the finished product fertilizer of this embodiment gained; Mg content 〉=10%; Sulphur content 〉=7.5%; Chloride content≤3%.This embodiment is used for many years on Fujian Province's peanut, fruit tree.Facts have proved that crops such as peanut, fruit tree use this product, not only can improve output, and can improve the quality of crop.
Claims (1)
1, a kind of technology of utilizing bittern to produce low-chlorine calcium magnesium sulphur formula fertilizer is characterized in that it is to adopt following processing step: 1), be mixed in proportion stirring, acquisition calcium hydroxide with calcium oxide content greater than 90% unslaked lime and water; 2), calcium hydroxide is mixed with magnesium chloride solution react magnesium hydroxide work in-process and the calcium chloride solution of producing calcic chlorine; 3), the reaction of calcium chloride solution and bittern, produce the gypsum work in-process and the magnesium chloride solution that contain magnesium chlorine; 4), the magnesium hydroxide work in-process of calcic chlorine are done, obtained the calcic magnesium hydroxide after the fragmentation through press filtration, washing, pouring; 5), the gypsum work in-process that will contain magnesium chlorine obtain containing magnesite cream after washing, centrifuge dehydration; 6), with the calcic magnesium hydroxide with contain magnesite cream and mix in proportion, make low-chlorine calcium magnesium sulphur formula fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100722727A CN101429056A (en) | 2008-12-04 | 2008-12-04 | Process for producing low-chlorine calcium magnesium sulphur formula with sea salt bittern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100722727A CN101429056A (en) | 2008-12-04 | 2008-12-04 | Process for producing low-chlorine calcium magnesium sulphur formula with sea salt bittern |
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| CN101429056A true CN101429056A (en) | 2009-05-13 |
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| CNA2008100722727A Pending CN101429056A (en) | 2008-12-04 | 2008-12-04 | Process for producing low-chlorine calcium magnesium sulphur formula with sea salt bittern |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870613A (en) * | 2010-07-21 | 2010-10-27 | 鄢桂生 | Multifunctional low-carbon pollution-free magnesium hydroxide fertilizer |
| CN102093104A (en) * | 2010-12-02 | 2011-06-15 | 广东海洋大学 | Preparation method of ecological foliar fertilizer for plant |
| CN102503619A (en) * | 2011-09-02 | 2012-06-20 | 天津科技大学 | Method for preparing compound fertilizer from salt manufacturing mother liquor |
| CN103833441A (en) * | 2012-11-24 | 2014-06-04 | 中国海洋大学 | Preparation and application of novel plant nutrition supplement agent |
| CN104774069A (en) * | 2015-04-14 | 2015-07-15 | 张义盼 | Novel fertilizer and preparation method thereof |
| CN106116706A (en) * | 2016-06-22 | 2016-11-16 | 中国热带农业科学院椰子研究所 | Cortex cocois radicis special fertilizer companion |
-
2008
- 2008-12-04 CN CNA2008100722727A patent/CN101429056A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870613A (en) * | 2010-07-21 | 2010-10-27 | 鄢桂生 | Multifunctional low-carbon pollution-free magnesium hydroxide fertilizer |
| CN102093104A (en) * | 2010-12-02 | 2011-06-15 | 广东海洋大学 | Preparation method of ecological foliar fertilizer for plant |
| CN102503619A (en) * | 2011-09-02 | 2012-06-20 | 天津科技大学 | Method for preparing compound fertilizer from salt manufacturing mother liquor |
| CN102503619B (en) * | 2011-09-02 | 2013-11-06 | 天津科技大学 | Method for preparing compound fertilizer from salt manufacturing mother liquor |
| CN103833441A (en) * | 2012-11-24 | 2014-06-04 | 中国海洋大学 | Preparation and application of novel plant nutrition supplement agent |
| CN104774069A (en) * | 2015-04-14 | 2015-07-15 | 张义盼 | Novel fertilizer and preparation method thereof |
| CN106116706A (en) * | 2016-06-22 | 2016-11-16 | 中国热带农业科学院椰子研究所 | Cortex cocois radicis special fertilizer companion |
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Open date: 20090513 |