CN1699148A - Process for producing industrial phosphoric acid using phosphorus ore as raw material - Google Patents
Process for producing industrial phosphoric acid using phosphorus ore as raw material Download PDFInfo
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- CN1699148A CN1699148A CN 200410022612 CN200410022612A CN1699148A CN 1699148 A CN1699148 A CN 1699148A CN 200410022612 CN200410022612 CN 200410022612 CN 200410022612 A CN200410022612 A CN 200410022612A CN 1699148 A CN1699148 A CN 1699148A
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Abstract
The invention relates to a process for producing industrial phosphoric acid using phosphorus ore as raw material, which comprises slacking phosphor ore, ball grinding and sieving, decomposing with diluted phosphoric acid and concentrated sulfuric acid, filtrating and pumping the filter liquor into sealed engineering plastic reactor, venting in hydrogen sulfide while stirring, fully reacting with various metallic ions, filtering to remove various metallic sulfide sediment, pumping the filter liquor into another reactor with a stirrer, charging sodium silicate and calcium phosphate while mixing, reacting and filtering, decolorizing the filter liquor with active carbon, decolorizing again, evaporating and concentrating the filter liquor to obtain technical grade phosphoric acid.
Description
(1) technical field the present invention relates to be the method for raw material production PHOSPHORIC ACID TECH.GRADE with the Rock Phosphate (72Min BPL), to belong to the compound technical of phosphorus a kind of.
(2) background technology phosphoric acid is one of basic chemical industry raw material, needs in domestic all trades and professions year to reach more than 2,000,000 tons with phosphoric acid amount, and market requirement phosphoric acid amount is big, is one of the most frequently used Chemicals.But the method for existing production phosphoric acid all is to make raw material with yellow phosphorus, so that power consumption is high, pollutes to weigh, and the cost height is so manufacturing enterprise's benefit is low.
(3) summary of the invention
1, goal of the invention the object of the present invention is to provide a kind of power consumption few, pollutes and lacks, and cost is low, the method for the manufacture phosphoric acid that manufacturing enterprise is profitable.
2, technical scheme technical scheme of the present invention is:
Directly with Rock Phosphate (72Min BPL) fragmentation, ball milling and through the 80-100 order sieve breeze, be that the dilute phosphoric acid of 5-15% and concentration are that 98% the vitriol oil decomposes after-filtration through concentration again, filtrate is raw phosphoric acid; Described raw phosphoric acid is pumped in the engineering plastics reactor of sealing, under agitation feed hydrogen sulfide each metal ion species in itself and the raw phosphoric acid is fully reacted, generate various metallic sulfides precipitations; Remove various metallic sulfides after filtration; Filtrate pumps in reactor that another band stirs, and under agitation adds the calcium phosphate of the 1-5% of the water glass of 1-5% of raw phosphoric acid weight and raw phosphoric acid weight, and after filtration, filter cake is Sodium Silicofluoride and calcium phosphate byproduct after the reaction; Filtrate refilters behind decolorizing with activated carbon; Filtrate is to get 70% PHOSPHORIC ACID TECH.GRADE at 1.526 o'clock through evaporation concentration to proportion; Be concentrated into proportion and be at 1.597 o'clock and get 75% PHOSPHORIC ACID TECH.GRADE, be concentrated into proportion 1.709 and be 85% PHOSPHORIC ACID TECH.GRADE.
3, beneficial effect utilizes the inventive method manufacture level phosphoric acid, and the one, save energy greatly, conventional yellow phosphorus is one ton of industrial phosphoric acid power consumption of raw material production, 5100 degree, and with the inventive method manufacture level phosphoric acid power consumption 175 degree only; The 2nd, reduced the three-waste pollution in the production process of yellow phosphorus; The 3rd, when utilizing the inventive method manufacture level phosphorolytic cleavage phosphorus ore, the small amount of fluorine waste gas of discharge generates the Sodium Silicofluoride byproduct through the sig water washing reaction; The waste residue of discharging in the production is the superphosphate fertilizer byproduct more than 12%; Non-wastewater discharge in the production, the wash water of flushing ground apparatus and bath water can all return produces the batching use; The 4th, reduced the production cost of phosphoric acid, improved phosphoric acid production benefit profit.Yellow phosphorus be one ton of industrial phosphoric acid profit of raw material production in 100-150 unit, and be that one ton of industrial phosphoric acid profit of raw material production is in 500-600 unit with the Rock Phosphate (72Min BPL); The 5th, remove various metallic impurity in the phosphoric acid with hydrogen sulfide, solve the difficulty problem that phosphoric acid purifies and solved the problems such as improving concentration of phosphoric acid and quality that concentrate.Can reach goal of the invention fully through on probation.
(4) Figure of description
Figure of description is a process flow sheet of the present invention.
(5) embodiment
Specific embodiments of the invention are:
Embodiment 1: directly with Rock Phosphate (72Min BPL) fragmentation, ball milling and through 80 orders sieve breeze, be that 5% dilute phosphoric acid and concentration are that 98% the vitriol oil decomposes after-filtration through concentration again, filtrate is raw phosphoric acid; Described raw phosphoric acid is pumped in the engineering plastics reactor of sealing, under agitation feed hydrogen sulfide each metal ion species in itself and the raw phosphoric acid is fully reacted, generate various metallic sulfides precipitations; Remove various metallic sulfides after filtration; Filtrate pumps in reactor that another band stirs, and under agitation adds 5% calcium phosphate of 1% water glass of raw phosphoric acid weight and raw phosphoric acid weight, and after filtration, filter cake is Sodium Silicofluoride and calcium phosphate byproduct after the reaction; Filtrate refilters behind decolorizing with activated carbon; Filtrate is to get 70% PHOSPHORIC ACID TECH.GRADE at 1.526 o'clock through evaporation concentration to proportion.
Embodiment 2: directly with Rock Phosphate (72Min BPL) fragmentation, ball milling and through 100 orders sieve breeze, be that 15% dilute phosphoric acid and concentration are that 98% the vitriol oil decomposes after-filtration through concentration again, filtrate is raw phosphoric acid; Described raw phosphoric acid is pumped in the engineering plastics reactor of sealing, under agitation feed hydrogen sulfide each metal ion species in itself and the raw phosphoric acid is fully reacted, generate various metallic sulfides precipitations; Remove various metallic sulfides after filtration; Filtrate pumps in reactor that another band stirs, and under agitation adds 1% calcium phosphate of 5% water glass of raw phosphoric acid weight and raw phosphoric acid weight, and after filtration, filter cake is Sodium Silicofluoride and calcium phosphate byproduct after the reaction; Filtrate refilters behind decolorizing with activated carbon; Filtrate is to get 75% PHOSPHORIC ACID TECH.GRADE at 1.597 o'clock through evaporation concentration to proportion.
Embodiment 3: directly with Rock Phosphate (72Min BPL) fragmentation, ball milling and through 90 orders sieve breeze, be that 10% dilute phosphoric acid and concentration are that 98% the vitriol oil decomposes after-filtration through concentration again, filtrate is raw phosphoric acid; Described raw phosphoric acid is pumped in the engineering plastics reactor of sealing, under agitation feed hydrogen sulfide each metal ion species in itself and the raw phosphoric acid is fully reacted, generate various metallic sulfides precipitations; Remove various metallic sulfides after filtration; Filtrate pumps in reactor that another band stirs, and under agitation adds 3% calcium phosphate of 3% water glass of raw phosphoric acid weight and raw phosphoric acid weight, and after filtration, filter cake is Sodium Silicofluoride and calcium phosphate byproduct after the reaction; Filtrate refilters behind decolorizing with activated carbon; Filtrate is 1.709 to be 85% PHOSPHORIC ACID TECH.GRADE through evaporation concentration to proportion.
The used raw material of the inventive method is preferably selected the Rock Phosphate (72Min BPL) that contains P30%-35% for use.
Embodiments of the invention all can be implemented.The invention is not restricted to these embodiment.
Claims (2)
1, a kind of is the method for raw material production PHOSPHORIC ACID TECH.GRADE with the Rock Phosphate (72Min BPL), it is characterized in that, it be with Rock Phosphate (72Min BPL) fragmentation, ball milling and through the 80-100 order sieve breeze, be that the dilute phosphoric acid of 5-15% and concentration are that 98% the vitriol oil decomposes after-filtration through concentration again, filtrate is raw phosphoric acid; Described raw phosphoric acid is pumped in the engineering plastics reactor of sealing, under agitation feed hydrogen sulfide each metal ion species in itself and the raw phosphoric acid is fully reacted, generate various metallic sulfides precipitations; Remove various metallic sulfides after filtration; Filtrate pumps in reactor that another band stirs, and under agitation adds the calcium phosphate of the 1-5% of the water glass of 1-5% of raw phosphoric acid weight and raw phosphoric acid weight, and after filtration, filter cake is Sodium Silicofluoride and calcium phosphate byproduct after the reaction; Filtrate refilters behind decolorizing with activated carbon; Filtrate promptly gets PHOSPHORIC ACID TECH.GRADE through evaporation concentration.
2, according to claim 1 is the method for raw material production PHOSPHORIC ACID TECH.GRADE with the Rock Phosphate (72Min BPL), it is characterized in that, used raw material is preferably selected the Rock Phosphate (72Min BPL) that contains P30%-35% for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022612 CN1699148A (en) | 2004-05-21 | 2004-05-21 | Process for producing industrial phosphoric acid using phosphorus ore as raw material |
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| CN 200410022612 CN1699148A (en) | 2004-05-21 | 2004-05-21 | Process for producing industrial phosphoric acid using phosphorus ore as raw material |
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| CN1699148A true CN1699148A (en) | 2005-11-23 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674280A (en) * | 2012-05-14 | 2012-09-19 | 瓮福（集团）有限责任公司 | Phosphoric acid decolorizing device |
| CN102815681A (en) * | 2012-06-21 | 2012-12-12 | 中化云龙有限公司 | Method for producing feed-grade calcium dihydrogen phosphate from wet-process phosphoric acid |
| CN103979498A (en) * | 2014-06-09 | 2014-08-13 | 云南民族大学 | Method for efficiently recovering iodine in phosphoric acid production process |
| CN103991853A (en) * | 2014-05-29 | 2014-08-20 | 龚家竹 | Method for producing sanitary phosphate fertilizer with low heavy metal content |
| CN105858628A (en) * | 2016-06-08 | 2016-08-17 | 纪新强 | Method for increasing extraction rate of mid-low-grade phosphate rock |
-
2004
- 2004-05-21 CN CN 200410022612 patent/CN1699148A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674280A (en) * | 2012-05-14 | 2012-09-19 | 瓮福（集团）有限责任公司 | Phosphoric acid decolorizing device |
| CN102674280B (en) * | 2012-05-14 | 2013-09-11 | 瓮福（集团）有限责任公司 | Phosphoric acid decolorizing device |
| CN102815681A (en) * | 2012-06-21 | 2012-12-12 | 中化云龙有限公司 | Method for producing feed-grade calcium dihydrogen phosphate from wet-process phosphoric acid |
| CN103991853A (en) * | 2014-05-29 | 2014-08-20 | 龚家竹 | Method for producing sanitary phosphate fertilizer with low heavy metal content |
| CN103979498A (en) * | 2014-06-09 | 2014-08-13 | 云南民族大学 | Method for efficiently recovering iodine in phosphoric acid production process |
| CN103979498B (en) * | 2014-06-09 | 2015-11-18 | 云南民族大学 | A kind of method of high efficiente callback iodine in production process of phosphoric acid |
| CN105858628A (en) * | 2016-06-08 | 2016-08-17 | 纪新强 | Method for increasing extraction rate of mid-low-grade phosphate rock |
| CN105858628B (en) * | 2016-06-08 | 2018-02-09 | 福建省德鲁士润滑油有限公司 | A kind of method for improving mid low grade phosphate rock extraction yield |
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