CN105858703A - Method for preparing calcium chloride with waste mountain flour and waste diluted hydrochloric acid - Google Patents
Method for preparing calcium chloride with waste mountain flour and waste diluted hydrochloric acid Download PDFInfo
- Publication number
- CN105858703A CN105858703A CN201610417892.4A CN201610417892A CN105858703A CN 105858703 A CN105858703 A CN 105858703A CN 201610417892 A CN201610417892 A CN 201610417892A CN 105858703 A CN105858703 A CN 105858703A
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- China
- Prior art keywords
- waste
- hydrochloric acid
- calcium chloride
- stone powder
- mountain flour
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/20—Halides
- C01F11/24—Chlorides
- C01F11/28—Chlorides by chlorination of alkaline-earth metal compounds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a method for preparing calcium chloride with waste mountain flour and waste diluted hydrochloric acid. The method comprises the following steps that firstly, waste diluted hydrochloric acid is added into waste mountain flour, and then constant stirring is carried out to make waste mountain flour fully dissolved, wherein the mass ratio of waste mountain flour to waste diluted hydrochloric acid is 1:(1.1-1.5); secondly, after complete dissolving is achieved, filtering is carried out, solid and liquid are separated, and solid residues and filter liquor are obtained; thirdly, the filter liquid obtained in the second step is subjected to evaporative crystallization under the temperature condition of 100-150 DEG C, and a calcium chloride industrial product is obtained. The method has the advantages that waste mountain flour serves as the raw material, the steps of ore raw material mining and grinding can be omitted, feeding and blending are directly carried out, and energy consumption is reduced; meanwhile, waste diluted hydrochloric acid is adopted for dissolving, and thus the problem that environment pollution is caused when waste acid liquid is directly discharged is solved; thus, the production cost can be reduced, and the environment-friendly performance of production can be improved; besides, by means of the preparing method, the calcium chloride industrial product with the calcium chloride content being 95% or above can be prepared.
Description
Technical field
The invention belongs to resources circulation comprehensive utilization and building materials field of Environment Protection, particularly to a kind of method utilizing waste stone powder and discarded dilute hydrochloric acid to produce calcium chloride.
Background technology
The world today, the energy, resource and environmental conservation are always the central topic of chlorine industry.For accelerating the development of chlorine industry, do not need only rely upon sophisticated technologies, in addition it is also necessary on the basis of existing technology, improved method, extend channel, reduce production cost, reduce energy resource consumption, finally realize the raising of economic benefit.
Stone powder is that the cutting powder that saw stone material produces is being cut by processing of stone factory, Nan'an of Fujian Province is the distribution centre of processing of stone, more than year processing stone material 300 ten thousand stere, and family more than 200 of the above enterprise of existing scale, by existing machining status, produce waste stone powder per year and be about the 30%～40% of processing stone material volume.Because it preferably being processed, the accumulation landfill of a large amount of stone powders, not only cause the significant wastage of the hardening soil, hardening, pollution of waterhead and resource, also the sustainable development to stone material industry causes the biggest negative effect.Therefore finding the industrial project of a kind of a large amount of stone powder waste material of dissolving, develop the secondary utilization ways of waste stone powder, comprehensive utilization and protection of resources to realizing solid waste are significant, and will produce significant Social benefit and economic benefit.
Hydrochloric acid is a kind of important inorganic chemical product, is widely used in the industries such as dyestuff, organic synthesis, food processing, printing and dyeing rinsing, leather, metallurgy, iron and steel.Article one, produce the pickling unit of 450,000 tons of cold-rolled steel sheets per year, need hydrochloric acid about 20,000 tons every year, hydrochloric waste liquid nearly 20,000 t/a of generation.In Chemical Manufacture, the annual hydrochloric waste water produced then cannot be added up.If these acid pickles directly discharge, not only cause serious environmental pollution, also can reduce the economic benefit of enterprise.In order to do the improvement of waste water, acid pickle well; protection environment, saves and makes rational use of resources, and Chinese scholars has carried out substantial amounts of research and exploration to acid pickle for a long time; propose the process of dissimilar acid pickle and acid regeneration recovery method and technology, achieve and preferably apply effect.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method utilizing waste stone powder and discarded dilute hydrochloric acid to produce calcium chloride, makes the stone powder discarded and discarded dilute hydrochloric acid obtain utilization of dissolving, it is possible to reduce production cost, improve the feature of environmental protection produced.
For solving above-mentioned technical problem, the technical scheme is that a kind of method utilizing waste stone powder and discarded dilute hydrochloric acid to produce calcium chloride, its innovative point is: said method comprising the steps of: (1) adds discarded dilute hydrochloric acid in waste stone powder, and the mass ratio of waste stone powder and discarded dilute hydrochloric acid is 1:1.1-1.5, then it is stirred continuously so that it is fully dissolve；(2), after dissolving completely, filter, make solid-liquid separation, obtain solid slag and filtrate；(3) the filtrate evaporative crystallization under the temperature conditions of 100～150 DEG C that will obtain in step (2), obtains calcium chloride industrial goods.
Further, in described calcium chloride industrial goods, calcium chloride content can reach more than 95%.
Further, in described step (1), the mass ratio of waste stone powder and discarded dilute hydrochloric acid is 1:1.3.
Further, in described step (1), the time of stirring is 4-6 hour.
It is an advantage of the current invention that: the present invention utilizes the method that waste stone powder and discarded dilute hydrochloric acid produce calcium chloride, use waste stone powder as raw material, ore exploitation and the step of grinding, direct feed, dispensing, energy efficient can be saved；Meanwhile, use discarded diluted hydrochloric acid dissolution, solve acid pickle and directly discharge, the problem causing environmental pollution；And then production cost can be reduced, improve the feature of environmental protection produced；Additionally, by this preparation method, calcium chloride content can be prepared into and can reach the calcium chloride industrial goods of more than 95%.
Detailed description of the invention
The following examples can make professional and technical personnel that the present invention is more fully understood, but the most therefore limits the present invention among described scope of embodiments.
Embodiment
1
The present embodiment utilizes the method that waste stone powder and discarded dilute hydrochloric acid produce calcium chloride, and this preparation method comprises the steps:
(1) in waste stone powder, add discarded dilute hydrochloric acid, and the mass ratio of waste stone powder and discarded dilute hydrochloric acid is 1:1.5, is then stirred continuously, stirs 6 hours so that it is fully dissolve；
(2), after dissolving completely, filter, make solid-liquid separation, obtain solid slag and filtrate；(3) filtrate obtained in step (2) is steamed under the temperature conditions of 100～150 DEG C
Send out crystallization, obtain the calcium chloride industrial goods that calcium chloride content is 96.3%.
Embodiment
2
The present embodiment utilizes the method that waste stone powder and discarded dilute hydrochloric acid produce calcium chloride, and this preparation method comprises the steps:
(1) in waste stone powder, add discarded dilute hydrochloric acid, and the mass ratio of waste stone powder and discarded dilute hydrochloric acid is 1:1.1, is then stirred continuously, stirs 4 hours so that it is fully dissolve；
(2), after dissolving completely, filter, make solid-liquid separation, obtain solid slag and filtrate；(3) the filtrate evaporative crystallization under the temperature conditions of 100～150 DEG C that will obtain in step (2), obtains the calcium chloride industrial goods that calcium chloride content is 96.8%.
Embodiment
3
The present embodiment utilizes the method that waste stone powder and discarded dilute hydrochloric acid produce calcium chloride, and this preparation method comprises the steps:
(1) in waste stone powder, add discarded dilute hydrochloric acid, and the mass ratio of waste stone powder and discarded dilute hydrochloric acid is 1:1.3, is then stirred continuously, stirs 5 hours so that it is fully dissolve；
(2), after dissolving completely, filter, make solid-liquid separation, obtain solid slag and filtrate；(3) the filtrate evaporative crystallization under the temperature conditions of 100～150 DEG C that will obtain in step (2), obtains the calcium chloride industrial goods that calcium chloride content is 97.2%.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and description; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (4)
1. one kind utilizes the method that waste stone powder and discarded dilute hydrochloric acid produce calcium chloride, it is characterized in that: said method comprising the steps of: (1) adds discarded dilute hydrochloric acid in waste stone powder, and the mass ratio of waste stone powder and discarded dilute hydrochloric acid is 1:1.1-1.5, then it is stirred continuously so that it is fully dissolve；(2), after dissolving completely, filter, make solid-liquid separation, obtain solid slag and filtrate；(3) the filtrate evaporative crystallization under the temperature conditions of 100～150 DEG C that will obtain in step (2), obtains calcium chloride industrial goods.
The method that waste stone powder the most according to claim 1 and discarded dilute hydrochloric acid produce calcium chloride, it is characterised in that: in described calcium chloride industrial goods, calcium chloride content can reach more than 95%.
The method that waste stone powder the most according to claim 1 and discarded dilute hydrochloric acid produce calcium chloride, it is characterised in that: in described step (1), waste stone powder is 1:1.3 with the mass ratio of discarded dilute hydrochloric acid.
The method that waste stone powder the most according to claim 1 and discarded dilute hydrochloric acid produce calcium chloride, it is characterised in that: in described step (1), the time of stirring is 4-6 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610417892.4A CN105858703A (en) | 2016-06-15 | 2016-06-15 | Method for preparing calcium chloride with waste mountain flour and waste diluted hydrochloric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610417892.4A CN105858703A (en) | 2016-06-15 | 2016-06-15 | Method for preparing calcium chloride with waste mountain flour and waste diluted hydrochloric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105858703A true CN105858703A (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610417892.4A Pending CN105858703A (en) | 2016-06-15 | 2016-06-15 | Method for preparing calcium chloride with waste mountain flour and waste diluted hydrochloric acid |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745149A (en) * | 2016-12-30 | 2017-05-31 | 伊犁南岗化工有限责任公司 | A kind of method that utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride |
| CN112876193A (en) * | 2021-02-05 | 2021-06-01 | 湖南省富民乐建材科技发展有限公司 | Gypsum-based sand-free self-leveling production method based on energy-saving building |
Citations (5)
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| RU2291109C2 (en) * | 2004-12-21 | 2007-01-10 | Открытое акционерное общество "Каустик" (ОАО "Каустик") | Method for preparing calcium chloride |
| CN101850954A (en) * | 2010-02-11 | 2010-10-06 | 汪晋强 | Method for preparing high-concentration sulfuric acid and anhydrous calcium chloride by using phosphorus gypsum |
| CN104445335A (en) * | 2014-12-12 | 2015-03-25 | 易科力（天津）环保科技发展有限公司 | Process and system for producing anhydrous calcium chloride by utilizing organic matter-containing waste hydrochloric acid |
| CN104773750A (en) * | 2015-03-25 | 2015-07-15 | 聊城市鲁西化工工程设计有限责任公司 | System for producing anhydrous calcium chloride by using industrial waste hydrochloric acid, and technology thereof |
| CN105129832A (en) * | 2015-08-21 | 2015-12-09 | 常熟市三福化工有限公司 | Method for continuous production of liquid calcium chloride by using fluorine-containing by-product waste hydrochloric acid |
-
2016
- 2016-06-15 CN CN201610417892.4A patent/CN105858703A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2291109C2 (en) * | 2004-12-21 | 2007-01-10 | Открытое акционерное общество "Каустик" (ОАО "Каустик") | Method for preparing calcium chloride |
| CN101850954A (en) * | 2010-02-11 | 2010-10-06 | 汪晋强 | Method for preparing high-concentration sulfuric acid and anhydrous calcium chloride by using phosphorus gypsum |
| CN104445335A (en) * | 2014-12-12 | 2015-03-25 | 易科力（天津）环保科技发展有限公司 | Process and system for producing anhydrous calcium chloride by utilizing organic matter-containing waste hydrochloric acid |
| CN104773750A (en) * | 2015-03-25 | 2015-07-15 | 聊城市鲁西化工工程设计有限责任公司 | System for producing anhydrous calcium chloride by using industrial waste hydrochloric acid, and technology thereof |
| CN105129832A (en) * | 2015-08-21 | 2015-12-09 | 常熟市三福化工有限公司 | Method for continuous production of liquid calcium chloride by using fluorine-containing by-product waste hydrochloric acid |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745149A (en) * | 2016-12-30 | 2017-05-31 | 伊犁南岗化工有限责任公司 | A kind of method that utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride |
| CN112876193A (en) * | 2021-02-05 | 2021-06-01 | 湖南省富民乐建材科技发展有限公司 | Gypsum-based sand-free self-leveling production method based on energy-saving building |
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Application publication date: 20160817 |