CN1087615A - The method of no filter dehydration, activator wet production of general calcium - Google Patents
The method of no filter dehydration, activator wet production of general calcium Download PDFInfo
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- CN1087615A CN1087615A CN 92111737 CN92111737A CN1087615A CN 1087615 A CN1087615 A CN 1087615A CN 92111737 CN92111737 CN 92111737 CN 92111737 A CN92111737 A CN 92111737A CN 1087615 A CN1087615 A CN 1087615A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
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Abstract
A kind of method of not having filter dehydration, activator wet production of general calcium, its production method be at first with broken behind the material screening, and water distribution is joined the ore deposit and carried out ball milling then, and ore pulp screening back ore pulp mixes with concentrated acid, changes at last, cuts, bright calcium, general calcium packs and dispatch from the factory.This method need not to add filter dehydration or promoting agent, the ore pulp moisture that can control the ball mill outlet accurately is in 26～28% scopes, can make a phosphatic fertilizer company of producing 5～100,000 tons per year save 300,000 yuan of facility investments, save 150,000 yuan of the electricity charge, upkeep costs etc., and technical process is simple and reliable, and product quality pine is dredged, and does not lump, fineness is little, no matter the fever and chills area all can adopt present method to produce qualified general calcium.
Description
The present invention is the novel method that belongs to a kind of general calcium of production (calcium superphosphate).
The major ingredient of general calcium is a water monocalcium phosphate and an anhydrous calciumsulphate, and effective ingredient is effective phosphorus pentoxide content 12～20%.And the concentrated acid pulp process is a kind of technical process of the general calcium of current domestic production, be superior to the Production Flow Chart of diluted acid breeze method, but the ore pulp moisture content in this technical process must be controlled in 26～28% the scope, just can make the phosphorus ore slurry and the vitriol oil in mixing tank, mix the bright calcium moisture content of back generation less than 16%, finished product moisture content is less than 15%, otherwise early stage, transformation efficiency was low, the later stage slaking is slow, and moisture content in the finished product and available phosphorus do not reach the qualified product index of national regulation, and becoming the substandard products sale of can not dispatching from the factory, therefore many enterprises become loss.
Current, the phosphorus ore slurry because of moisture 26～28% is big because of viscosity, and poor mobile performance all can't come out with the ball mill direct production.Domestic solution ore pulp moisture content is produced the method for general calcium and had only two kinds in 26～28% scopes: a kind of is the method (as Fig. 2) that concentrated acid slurry filtration evaporation is produced general calcium, promptly add filter in ball mill outlet back, by filter the moisture content that surpasses 28% in the ore pulp is separated, make the ore pulp moisture content that enters mixing tank be controlled at 26～28%, a producer that produces 5～100,000 tons of general calcium per year, to increase by 300,000 yuan investment in fixed assets in this way, also to increase about 150,000 yuan of the electricity charge and upkeep cost, general calcium unit cost increases about 2 yuan, so uneconomical, do not reach the requirement of people's ideal; Second kind is the method (patent No.: 88100149) (as shown in Figure 3) that general calcium is produced in active pulp method production, promptly be to add tensio-active agent at the ball mill opening for feed, make moisture 26～28% ore pulp increase flowability, to increase simple and easy flow process together in this way, the unit cost of buying promoting agent and general calcium being produced increases about 2.5 yuan, need to increase more than total cost 12.～250,000 yuan, as enterprise that produces 5～100,000 tons of general calcium per year is annual so uneconomical too.And these two kinds of methods all do not have control and calculate water feeding method, and can only add water with directly perceived and experience estimation.
The objective of the invention is for providing a kind of simple and reliable, effective, the no filter dehydration that suitability is strong, the novel method of activator wet production of general calcium go out phosphorus ore ore pulp in moisture 26～28% scopes by the ball mill direct production.
Wet production of general calcium (calcium superphosphate), and ore pulp moisture content optimal parameter is 26～28%.Wet production of general calcium makes with the sulfuric acid decomposing phosphate rock, and its decomposition course is two stages, and the fs mainly is that the phosphorus ore slurry reaction of certain density sulfuric acid and some amount generates free phosphoric acid and calcium sulfate, and this section is at mixing tank and change into indoor finishing; Free acid that subordinate phase produced and the reaction of remaining ore pulp, produce a water monocalcium phosphate, this elementary reaction mainly carries out in the slaking storehouse, and phosphorus ore pulp-water part of moisture 26～28% loses 10～12% in the fs reaction, make that moisture content is 14～16% in the bright calcium, meet the requirement of bright calcium moisture content, lose moisture content 9～11% again in the subordinate phase reaction, remain 5% free-water in finished product, make moisture content in the general calcium finished product less than 5%, reach the requirement of general calcium (phosphate fertilizer) index.
Below the present invention is described in detail, the no filter dehydration that is proposed, the method for activator wet production of general calcium, promptly produce general calcium and need not to add filter dehydration or promoting agent, its production method is: at first that raw material (Rock Phosphate (72Min BPL)) screening back is broken, water distribution is joined the ore deposit and is carried out ball milling then, ore pulp screening back ore pulp mixes with concentrated acid, changes into cutting, bright calcium, general calcium (phosphate fertilizer) at last and packs and dispatch from the factory.In its technical process be: material screening → fragmentation → water distribution is joined ore deposit → ball milling → ore pulp screening → ore pulp and is mixed → change into cutting → bright calcium → general calcium (phosphate fertilizer) → packing with concentrated acid and dispatch from the factory.
Material screening described in the technical process of the present invention is to join the ore deposit less than the direct water distribution of the ore of 25mm and carry out ball milling sieving out granularity.
Fragmentation described in the technical process of the present invention is to carry out fragmentation with sieving out the ore of granularity greater than 25mm, and its granularity must be less than 25mm.
Water distribution described in the technical process of the present invention, the water yield that promptly per hour adds ball mill is for per hour adding 38.5～43.5% of ball mill ore weight deducts the water content that per hour adds the ball mill ore; Join the output (t) that designs for ball mill in the ore deposit/hour decide.
Description of drawings:
Fig. 1 the present invention produces the technical process simplified schematic diagram of general calcium
The technical process simplified schematic diagram that Fig. 2 prior art concentrated acid slurry filtration evaporation is produced general calcium
Fig. 3 prior art active pulp method is produced the technical process simplified schematic diagram of general calcium
As Fig. 1 one embodiment of the present of invention have been described.It is compared with concentrated acid slurry filtration evaporation, has simplified the broken technology (as left frame line part ore bucket 2, crusher 3, travelling belt 4 among Fig. 2) in preceding road, has saved filtering and dewatering process (as the right two frame line part filters 14 among Fig. 2; Horizontal spiral 16, funnel feeding machine 17, vertical helical 18); It is compared with active pulp method, simplifies and has saved active pulp method (adding tensio-active agent) technical process part (as frame line part promoting agent storage tank 1, promoting agent make-up tank 2, active liquid pump 3, promoting agent header tank 4, the under meter 5 among Fig. 3).
Owing to adopted above-mentioned technical scheme, it compared with prior art has following advantage:
1. ball mill outlet ore pulp moisture content can be controlled in 26～28% scopes accurately, and viscosity is little, and mobile performance is good, and need not increase any investment, can reach the requirement that wet method is produced general calcium (phosphate fertilizer) moisture content index;
2. shortened technological process. Produce general calcium with this method, can save the filter part in the filter dehydration flow process, also can save active pulp method flow process part;
3. the reduction power consumption reduces production costs, and can make a phosphate fertilizer of producing 5～100,000 tons per year Enterprise saves 300,000 yuan of equipment purchasing, supporting installation fees, saves about 150,000 yuan of the electricity charge, maintenance cost, personnel's wage etc.
4. this method is applicable to various mineral, and product quality pine is thin, and physical property is good, does not lump, and fineness is little, no matter tropical, refrigerant latitudes, with the ore pulp that this method is produced, mobile performance is all good.
Claims (4)
1, a kind of method of not having filter dehydration, activator wet production of general calcium, it is characterized in that at first that raw material (Rock Phosphate (72Min BPL)) screening back is broken, water distribution is joined the ore deposit and is carried out ball milling, ore pulp screening back ore pulp and mix with concentrated acid then, change into cutting, bright calcium at last, general calcium (phosphate fertilizer) packing is dispatched from the factory, in its technical process be: material screening → fragmentation → water distribution is joined ore deposit → ball milling → ore pulp screening → ore pulp and is mixed → change into cutting → bright calcium → general calcium → packing with concentrated acid and dispatch from the factory.
2,, it is characterized in that material screening is to join the ore deposit less than the direct water distribution of the ore of 25mm and carry out ball milling sieving out granularity according to the method for the described no filter dehydration of claim 1, activator wet production of general calcium.
3, according to the method for the described no filter dehydration of claim 1, activator wet production of general calcium, it is characterized in that fragmentation is to carry out fragmentation with sieving out the ore of granularity greater than 25mm, its granularity must be less than 25mm.
4, according to the method for the described no filter dehydration of claim 1, activator wet production of general calcium, it is characterized in that water distribution, the water yield that promptly per hour adds ball mill is for per hour adding 38.5～43.5% of ball mill ore weight deducts the water content that per hour adds the ball mill ore, joins the output (t) that designs for ball mill in the ore deposit/hour decide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111737 CN1087615A (en) | 1992-12-03 | 1992-12-03 | The method of no filter dehydration, activator wet production of general calcium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111737 CN1087615A (en) | 1992-12-03 | 1992-12-03 | The method of no filter dehydration, activator wet production of general calcium |
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| Publication Number | Publication Date |
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| CN1087615A true CN1087615A (en) | 1994-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 92111737 Pending CN1087615A (en) | 1992-12-03 | 1992-12-03 | The method of no filter dehydration, activator wet production of general calcium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253996A (en) * | 2012-10-09 | 2013-08-21 | 赵正富 | Production process of complex phosphate fertilizer |
| CN104045072A (en) * | 2014-05-23 | 2014-09-17 | 保康丰源肥业有限责任公司 | Energy-saving production method of calcium superphosphate |
| CN104058812A (en) * | 2014-06-09 | 2014-09-24 | 会理县鑫铃有机生物复混肥厂 | Production method of compound phosphate fertilizer |
| CN111004052A (en) * | 2019-12-10 | 2020-04-14 | 贵州胜威福全化工有限公司 | Non-curing preparation method for common calcium superphosphate production |
-
1992
- 1992-12-03 CN CN 92111737 patent/CN1087615A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253996A (en) * | 2012-10-09 | 2013-08-21 | 赵正富 | Production process of complex phosphate fertilizer |
| CN104045072A (en) * | 2014-05-23 | 2014-09-17 | 保康丰源肥业有限责任公司 | Energy-saving production method of calcium superphosphate |
| CN104058812A (en) * | 2014-06-09 | 2014-09-24 | 会理县鑫铃有机生物复混肥厂 | Production method of compound phosphate fertilizer |
| CN111004052A (en) * | 2019-12-10 | 2020-04-14 | 贵州胜威福全化工有限公司 | Non-curing preparation method for common calcium superphosphate production |
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