CN1181014C - Multi-element borax and its preparing process - Google Patents
Multi-element borax and its preparing process Download PDFInfo
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- CN1181014C CN1181014C CNB011387610A CN01138761A CN1181014C CN 1181014 C CN1181014 C CN 1181014C CN B011387610 A CNB011387610 A CN B011387610A CN 01138761 A CN01138761 A CN 01138761A CN 1181014 C CN1181014 C CN 1181014C
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- borax
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- boric acid
- slip
- crystallizer
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Abstract
The present invention belongs to the deepening processing field of governing pollution and single boron fertilizer for boronation factories, particularly to the field of preparing multi-element borax by using the sulfuric acid method for producing mother liquor of boracic acid and a preparation technique thereof. The present invention is characterized in that the present invention contains borax, magnesium sulfate, ferrum, sulphur, calcium, chloride and water. The preparation technique in sequence comprises the following steps that the mother liquor is loaded to an evaporator for evaporation; when boracic acid or magnesium sulfate reach saturated concentration, neutralization is carried out to make pH controlled from 4 to 7; the neutralized slurry is loaded to a crystallizer for crystallization; when the neutralized slurry is cooled to 20 DEG C to 40 DEG C, the slurry is put in a natural settling groove for sedimentation, and liquor is discharged; dehydration, component detection, preparation, weighing and subpackage are carried out.
Description
Affiliated technical field
The invention belongs to the boronation worker and administer and pollute and the deepening manufacture field of single boron fertilizer, particularly a kind of Production By Sulfuric Acid Process mother liquid of boric acid and borax of utilizing produced multi-element borax and preparation technology field thereof.
Background technology
In the past, the boron fertilizer of China was based on industrial borax, boric acid, and the nutrient of these boron fertilizers is single, and the peasant uses inconvenience.And use cost is higher.And the rate of recovery of boric acid production process is lower, amplification quantity mother liquor side by side, promptly severe contamination environment, wasted ample resources again.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of environmental benefit good, the quality height, and effect of increasing production is obvious, simple multi-element borax of processing method and preparation technology thereof.
Technical solution of the present invention can realize according to following mode:
A kind of multi-element borax is characterized in: by: borax, sal epsom, iron, sulphur, calcium, muriate, water are formed; The said components weight percentage is followed successively by:
Borax 40～41%,
Sal epsom 50～52.1%
Iron 0.3～0.7%
Sulphur 7～7.2%
Calcium 0.05～0.29%
Muriate 0.01～0.03%;
Water 0.3～5%.
The preparation technology of above-mentioned multi-element borax is characterized in: carry out successively as follows:
(A) the Production By Sulfuric Acid Process mother liquid of boric acid is sent in the vaporizer evaporated;
(B) reach 80 ℃～120 ℃ when vaporization temperature, it is near when saturated that boric acid or magnesium sulfate concentration have reached, is 80 ℃～120 ℃ with temperature, and concentration is that the borax solution of 380～440g/l neutralizes to above-mentioned slip, makes its PH be controlled at 4～7;
(C) slip that neutralization is finished is sent into to cool in the crystallizer and is carried out crystallization;
When (D) being cooled to 20 ℃～40 ℃, the slip in the crystallizer is put into the natural subsidence groove, carry out sedimentation, expel liquid;
(E) above-mentioned sediment is dewatered;
(F) composition of the above-mentioned dehydrated material of detection;
(G) composition that utilizes the crystallized product of borax and mother liquid of boric acid to adjust above-mentioned material makes borax content meet the component standard of above-mentioned multi-element borax;
(H) weighing, packing.
The vapor pressure of described vaporizer is controlled at 0.1～0.3Mpa.
The present invention has tangible increasing yield and improving quality effect, and its environmental benefit is remarkable, and processing method is simple.
Description of drawings
Fig. 1 is a process flow sheet of the present invention;
Embodiment
Embodiment 1:
A kind of multi-element borax, it contains: borax, sal epsom, iron, sulphur, calcium, muriate, water; The said components weight percentage is followed successively by:
Borax 41%
Sal epsom 50%
Iron 0.7%
Sulphur 7%
Calcium 0.29%
Muriate 0.01%;
Water 1%
The preparation technology of above-mentioned multi-element borax is characterized in that: carry out successively as follows:
(A) the Production By Sulfuric Acid Process mother liquid of boric acid is sent in the vaporizer evaporated; The vapor pressure of vaporizer is controlled at 0.15Mpa.Vaporizer adopts the shell and tube single-effect evaporator;
(B) reach 80 ℃ when vaporization temperature, it is near when saturated that boric acid or magnesium sulfate concentration have reached, is 80 ℃ with temperature, and concentration is that the borax solution of 380g/l neutralizes to above-mentioned slip, makes its PH be controlled at 5;
(C) slip that neutralization is finished is sent into to cool in the crystallizer and is carried out crystallization;
When (D) being cooled to 30 ℃, the slip in the crystallizer is put into the natural subsidence groove, carry out sedimentation, expel liquid;
(E) above-mentioned sediment is dewatered;
(F) composition of the above-mentioned dehydrated material of detection;
(G) crystallized product that utilizes borax and Production By Sulfuric Acid Process mother liquid of boric acid the to be mixed composition of adjusting above-mentioned material makes borax content meet the component standard of above-mentioned multi-element borax;
(H) weighing, packing.
Embodiment 2:
A kind of multi-element borax is characterized in: contain: borax, sal epsom, iron, sulphur, calcium, muriate, water; The said components weight percentage is followed successively by:
Borax 40%
Sal epsom 50.3%
Iron 0.38%
Sulphur 7.2%
Calcium 0.09%
Muriate 0.03%;
Water 2%
The preparation technology of above-mentioned multi-element borax is characterized in that: carry out successively as follows:
(A) preparation technology of above-mentioned multi-element borax is characterized in: carry out successively as follows: the Production By Sulfuric Acid Process mother liquid of boric acid is sent in the vaporizer evaporated; The vapor pressure of vaporizer can be controlled in 0.25Mpa.
(B) reach 100 ℃ when vaporization temperature, it is near when saturated that boric acid or magnesium sulfate concentration have reached, is 100 ℃ with temperature, and concentration is that the borax solution of 400g/l neutralizes to above-mentioned slip, makes its PH be controlled at 6;
(C) slip that neutralization is finished is sent into to cool in the crystallizer and is carried out crystallization;
When (D) being cooled to 35 ℃, the slip in the crystallizer is put into the natural subsidence groove, carry out sedimentation, expel liquid;
(E) above-mentioned sediment is dewatered;
(F) composition of the above-mentioned dehydrated material of detection;
(G) composition that utilizes the crystallized product of borax and mother liquid of boric acid to adjust above-mentioned material makes borax content meet the component standard of above-mentioned multi-element borax;
(H) weighing, packing.
Embodiment 3:
A kind of multi-element borax is characterized in: contain: borax, sal epsom, iron, sulphur, calcium, muriate, water; The said components weight percentage is followed successively by:
Borax 41.%
Sal epsom 51%
Iron 0.4%
Sulphur 7%
Calcium 0.08%
Muriate 0.02%;
Water 0.5%
The preparation technology of above-mentioned multi-element borax is characterized in: carry out successively as follows:
(A) the Production By Sulfuric Acid Process mother liquid of boric acid is sent in the vaporizer evaporated; The vapor pressure of vaporizer is controlled at 0.2Mpa.
(B) reach 110 ℃ when vaporization temperature, it is near when saturated that boric acid or magnesium sulfate concentration have reached, is 110 ℃ with temperature, and concentration is that the borax solution of 440g/l neutralizes to above-mentioned slip, makes its PH be controlled at 7;
(C) slip that neutralization is finished is sent into to cool in the crystallizer and is carried out crystallization;
When (D) being cooled to 38 ℃, the slip in the crystallizer is put into the natural subsidence groove, carry out sedimentation, expel liquid;
(E) above-mentioned sediment is dewatered;
(F) composition of the above-mentioned dehydrated material of detection;
(G) composition that utilizes the crystallized product of borax and mother liquid of boric acid to adjust above-mentioned material makes borax content meet the component standard of above-mentioned multi-element borax;
(H) weighing, packing.
Embodiment 4:
A kind of multi-element borax is characterized in: contain: borax, sal epsom, iron, sulphur, calcium, muriate, water; The said components weight percentage is followed successively by:
Borax 40.1%
Sal epsom 52.1%
Iron 0.3%
Sulphur 7.1%
Calcium 0.09%
Muriate 0.01%;
Water 0.3%.
The preparation technology of above-mentioned multi-element borax is characterized in: carry out successively as follows:
(A) the Production By Sulfuric Acid Process mother liquid of boric acid is sent in the vaporizer evaporated; The vapor pressure of vaporizer is controlled at 0.18Mpa.
(B) reach 90 ℃ when vaporization temperature, it is near when saturated that boric acid or magnesium sulfate concentration have reached, is 90 ℃ with temperature, and concentration is that the borax solution of 390g/l neutralizes to above-mentioned slip, makes its PH be controlled at 5;
(C) slip that neutralization is finished is sent into to cool in the crystallizer and is carried out crystallization;
When (D) being cooled to 36 ℃, the slip in the crystallizer is put into the natural subsidence groove, carry out sedimentation, expel liquid;
(E) above-mentioned sediment is dewatered;
(F) composition of the above-mentioned dehydrated material of detection;
(G) composition that utilizes the crystallized product of borax and mother liquid of boric acid to adjust above-mentioned material makes borax content meet the component standard of above-mentioned multi-element borax;
(H) weighing, packing.
Claims (3)
1, a kind of multi-element borax is characterized in that: by: borax, sal epsom, iron, sulphur, calcium, muriate, water are formed; The said components weight percentage is followed successively by:
Borax 40～41%
Sal epsom 50～52.1%
Iron 0.3～0.7%
Sulphur 7～7.2%
Calcium 0.05～0.29%
Muriate 0.01～0.03%;
Water 0.3～5%.
2, according to the preparation technology of the described multi-element borax of claim 1, it is characterized in that:
Carry out successively as follows:
(A) the Production By Sulfuric Acid Process mother liquid of boric acid is sent in the vaporizer evaporated;
(B) reach 80 ℃～120 ℃ when vaporization temperature, it is near when saturated that boric acid or magnesium sulfate concentration have reached, is 80 ℃～120 ℃ with temperature, and concentration is that the borax solution of 380～440g/l neutralizes to above-mentioned slip, makes its PH be controlled at 4～7;
(C) slip that neutralization is finished is sent into to cool in the crystallizer and is carried out crystallization;
When (D) being cooled to 20 ℃～40 ℃, the slip in the crystallizer is put into the natural subsidence groove, carry out sedimentation, expel liquid;
(E) above-mentioned sediment is dewatered;
(F) composition of the above-mentioned dehydrated material of detection;
(G) composition that utilizes the crystallized product of borax and mother liquid of boric acid to adjust above-mentioned material makes borax content meet the standard of claim 1;
(H) weighing, packing.
3, according to the preparation technology of the described multi-element borax of claim 2, it is characterized in that:
The vapor pressure of described vaporizer is controlled at 0.1～0.3Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011387610A CN1181014C (en) | 2001-12-03 | 2001-12-03 | Multi-element borax and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011387610A CN1181014C (en) | 2001-12-03 | 2001-12-03 | Multi-element borax and its preparing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1396141A CN1396141A (en) | 2003-02-12 |
| CN1181014C true CN1181014C (en) | 2004-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011387610A Expired - Fee Related CN1181014C (en) | 2001-12-03 | 2001-12-03 | Multi-element borax and its preparing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1181014C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317240C (en) * | 2005-06-27 | 2007-05-23 | 安徽省农望农业科技开发有限公司 | Instant polymerized boric fertilizer and its preparing process |
| CN1328226C (en) * | 2005-12-15 | 2007-07-25 | 安徽省农望农业科技开发有限公司 | Instant soluble leaf-surface sprayed boric fertilizer and its production method |
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2001
- 2001-12-03 CN CNB011387610A patent/CN1181014C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1396141A (en) | 2003-02-12 |
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Granted publication date: 20041222 Termination date: 20100104 |