CN103553110A - Method for producing barium sulfate from combination-process industrial ammonium chloride solid waste - Google Patents
Method for producing barium sulfate from combination-process industrial ammonium chloride solid waste Download PDFInfo
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- CN103553110A CN103553110A CN201310521761.7A CN201310521761A CN103553110A CN 103553110 A CN103553110 A CN 103553110A CN 201310521761 A CN201310521761 A CN 201310521761A CN 103553110 A CN103553110 A CN 103553110A
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- barium sulfate
- solid waste
- ammonium chloride
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
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Abstract
The invention relates to a method for producing barium sulfate from combination-process industrial ammonium chloride solid waste. The method comprises the following steps: (1) stirring and washing the combination-process industrial ammonium chloride solid waste, namely barium sulfate mud and a dilute hydrochloric acid solution in a pickling tank, then filter-pressing, and feeding filtrate to an industrial ammonium chloride production system to prepare a barium chloride solution when filtrate is recycled to be neutral, wherein the hydrochloric acid concentration is smaller than or equal to 25%; (2) stirring and washing a filter cake in the step (1) and process water in a rinsing bath, then filter-pressing, and feeding filtrate to the pickling tank to wash the barium sulfate mud when the filtrate is recycled to weak acidity; (3) drying and crushing the filter cake in the step (2), so as to obtain a precipitated barium sulfate product. By adopting the method, barium resources can be fully utilized; precipitated barium sulfate is produced in an attached manner; the economic benefits of an enterprise are improved; meanwhile, the solid waste barium sulfate mud in combination-process industrial ammonium chloride production can be thoroughly removed; a hidden danger of environmental pollution is also removed.
Description
Technical field
The present invention relates to smart ammonium (industrial ammonium chloride) field of solid waste treating technology, specifically refer to a kind of method of utilizing integrated process essence ammonium solid waste to produce barium sulfate.
Background technology
Integrated process essence ammonium novel process is to adopt two-stage washing method manufacture ammonium chloride (smart ammonium), and the first step is mixing, washing, is about to agriculture ammonium chloride and the ammonia mother liquor I mixing, washing joining in alkali production; The second stage is circulation method washing, with circulating mother liquor, washs, for reducing the sulfate radical (SO in smart ammonium product
4 2-), in described circulating mother liquor, constantly add the BaCl of configuration
2solution generates barium sulfate precipitate, removes the sulfate radical in circulating mother liquor.In described circulating mother liquor, contain carbonate (CO
3 2-), add BaCl
2after solution, the precipitated barium of Formed acid simultaneously.
Barium sulfate suspension is through plate-and-frame filter press press filtration, filtrate retrieval system; Filter cake---barium sulfate mud is collected after code heap with woven bag, otherwise processed.Processing integrated process essence ammonium solid waste---the method for barium sulfate mud has two kinds at present: the one, and in remote place, dig pit and bury, under the acidic conditionss such as acid rain, barium sulfate mud will produce a large amount of, hypertoxic heavy metal barium ion (Ba
2+), polluted surface water, environmental pollution; The 2nd, be transported to saltworks of company hydromining district's backfill abraum salt well, cause the waste of barium resource.
Summary of the invention
Object of the present invention is exactly according to the deficiency of existing smart ammonium solid waste disposal production technology, to provide a kind of method of utilizing integrated process essence ammonium solid waste to produce process white.
For achieving the above object, the method that a kind of integrated process essence ammonium solid waste provided by the invention is produced process white, it be take, and integrated process essence ammonium solid waste---barium sulfate mud is raw material, with dilute hydrochloric acid and process water equal solvent, carry out two-stage agitator treating, two-stage press filtration, dry, pulverizing, produce process white, comprise the steps:
(1) barium sulfate mud and dilute hydrochloric acid solution (concentration of hydrochloric acid≤25%) agitator treating in pickling tank, then press filtration; During filtrate cycle utilization extremely neutral (solution pH value 6.5-6.8), send smart ammonium production system configuration barium chloride solution.
(2) filter cake in step (1) and process water agitator treating in washing bath, then press filtration; When filtrate cycle is utilized to slightly acidic (solution pH value 5.0-6.0), deliver to pickling tank washing barium sulfate mud.
(3) after the filter cake drying in step (2), pulverizing, be precipitated barium sulfate product.
Beneficial effect
One, can make full use of barium resource, and attached product process white, has improved Business Economic Benefit.
Its two, can thoroughly eliminate the solid waste barium sulfate mud of integrated process essence ammonium in producing, eliminate the hidden danger of environmental pollution.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
The smart ammonium solid waste of the integrated process of take---barium sulfate mud is raw material, with dilute hydrochloric acid and process water equal solvent, carries out two-stage washing, two-stage press filtration, and dry, pulverizing, produces process white, and it comprises the steps:
(1) barium sulfate mud and dilute hydrochloric acid solution (concentration of hydrochloric acid≤25%) agitator treating in pickling tank of the attached product of integrated process essence ammonium, then press filtration; Filtrate is back to pickling tank recycle, and when in pickling tank, filtrate is neutral (pH value 6.5-6.8), pumping essence ammonium production system is used for configuring barium chloride solution.
(2) filter cake in step (1) and process water agitator treating in washing bath, then press filtration; Filtrate turns back to washing bath recycle, when filtrate is slightly acidic (pH value 5.0-6.0) in washing bath, is pumped to pickling tank.
(3) filter cake drying, the pulverizing in step (2), is precipitated barium sulfate product.
Principle of work of the present invention is: in integrated process essence ammonium solution, contain more CO
3 2-, in smart ammonium two is washed circulating mother liquor, add BaCl
2when solution generates barium sulfate precipitate, be eutectoid out a large amount of barium carbonate sediments simultaneously.Barium sulfate character in dilute hydrochloric acid solution is very stable; Barium carbonate reacts with dilute hydrochloric acid and generates BaCl solution, emits CO
2gas.
Claims (1)
1. a method of utilizing integrated process essence ammonium solid waste to produce barium sulfate, is characterized in that, said method comprising the steps of:
(1) by integrated process essence ammonium solid waste barium sulfate mud and dilute hydrochloric acid solution agitator treating in pickling tank, concentration of hydrochloric acid≤25%, then press filtration; When filtrate cycle utilization is extremely neutral, send smart ammonium production system configuration barium chloride solution;
(2) filter cake in step (1) and process water agitator treating in washing bath, then press filtration; When filtrate cycle is utilized to slightly acidic, deliver to pickling tank washing barium sulfate mud;
(3) filter cake drying, the pulverizing in step (2), is precipitated barium sulfate product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521761.7A CN103553110A (en) | 2013-10-29 | 2013-10-29 | Method for producing barium sulfate from combination-process industrial ammonium chloride solid waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521761.7A CN103553110A (en) | 2013-10-29 | 2013-10-29 | Method for producing barium sulfate from combination-process industrial ammonium chloride solid waste |
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|---|---|
| CN103553110A true CN103553110A (en) | 2014-02-05 |
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|---|---|---|---|
| CN201310521761.7A Pending CN103553110A (en) | 2013-10-29 | 2013-10-29 | Method for producing barium sulfate from combination-process industrial ammonium chloride solid waste |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105439187A (en) * | 2015-12-16 | 2016-03-30 | 衢州市远方化工厂（普通合伙） | Barium sulfate fluidization washing method |
| CN107177733A (en) * | 2017-06-05 | 2017-09-19 | 中南大学 | A kind of method of barite deposit refining and edulcoration synthetical recovery calcium and magnesium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247160A (en) * | 1998-09-10 | 2000-03-15 | 湖北双环化工集团公司 | Process for preparing refined ammonium by joint method |
| CN102234120A (en) * | 2011-03-29 | 2011-11-09 | 湖北双环科技股份有限公司 | Method for producing high-class purified ammonium by washing ammonium chloride with ammonia liquor |
-
2013
- 2013-10-29 CN CN201310521761.7A patent/CN103553110A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247160A (en) * | 1998-09-10 | 2000-03-15 | 湖北双环化工集团公司 | Process for preparing refined ammonium by joint method |
| CN102234120A (en) * | 2011-03-29 | 2011-11-09 | 湖北双环科技股份有限公司 | Method for producing high-class purified ammonium by washing ammonium chloride with ammonia liquor |
Non-Patent Citations (2)
| Title |
|---|
| 杭太俊: "《药物分析》", 31 August 2011, article "硫酸盐检查法", pages: 119 * |
| 梅克力等: "应用沉淀分离技术测定氯化钡盐中微量硫酸根与碳酸根", 《长安科技》, vol. 12, no. 2, 31 December 2006 (2006-12-31) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105439187A (en) * | 2015-12-16 | 2016-03-30 | 衢州市远方化工厂（普通合伙） | Barium sulfate fluidization washing method |
| CN105439187B (en) * | 2015-12-16 | 2017-12-08 | 衢州市远方化工厂（普通合伙） | A kind of fluidization wash method of barium sulfate |
| CN107177733A (en) * | 2017-06-05 | 2017-09-19 | 中南大学 | A kind of method of barite deposit refining and edulcoration synthetical recovery calcium and magnesium |
| CN107177733B (en) * | 2017-06-05 | 2018-12-21 | 中南大学 | A kind of method of barite deposit refining and edulcoration synthetical recovery calcium and magnesium |
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Application publication date: 20140205 |