CN102180477A - Method for preparing calcium metaborate from boron sludge washing solution - Google Patents
Method for preparing calcium metaborate from boron sludge washing solution Download PDFInfo
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- CN102180477A CN102180477A CN 201010556358 CN201010556358A CN102180477A CN 102180477 A CN102180477 A CN 102180477A CN 201010556358 CN201010556358 CN 201010556358 CN 201010556358 A CN201010556358 A CN 201010556358A CN 102180477 A CN102180477 A CN 102180477A
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- calcium metaborate
- boron mud
- calcium
- boron
- metaborate
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Abstract
The invention discloses a method for preparing calcium metaborate from boron sludge washing solution, and relates to the technical field of treatment and comprehensive utilization of the three wastes (waste water, waste gas and waste residues) in the inorganic chemical industry. The method comprises the following steps of: reacting clear boron sludge washing solution with calcium hydroxide in a corrosion-resistant reactor in a mass ratio of boric acid in the boron sludge washing solution to the calcium hydroxide of 1:(0.99-1.39) based on pure substances, and performing chemical reaction with slow stirring to generate a calcium metaborate precipitate; and filtering to obtain a calcium metaborate filter cake, washing by using cold water, whirling, drying, grinding, checking weight and packaging to obtain a calcium metaborate product. The invention has the advantages that: the composition of a substance for separating boron sludge is effectively utilized, and a foundation is laid for the smooth proceeding of next-step extraction and utilization work of the boron sludge; the prepared calcium metaborate product has wide application and is a marketable product with high economic value; and the economic benefit of treating boron sludge waste is improved, high return is created, and the method is the model of comprehensive treatment and utilization in the chemical industry.
Description
Technical field
The present invention relates to the technical field of the inorganic chemical industry disposal of three wastes and comprehensive utilization, particularly a kind of method for preparing calcium metaborate with boron mud washing lotion.
Background technology
Boron mud is with szaibelyite (2MgOB
2O
3H
2O) be raw material, by roasting, pulverizing, mix, take the carbon water law to produce borax (Na with soda ash
2B
4O
710H
2O), remaining solid waste after washing, crystallisation process extract borax.Produce one ton of borax and can produce 4 tons of boron mud, a borax plant that produces 8000 tons per year, can produce boron mud every year is 3.2 ten thousand tons.Because the quantity discharged of boron mud is bigger, the multiple comprehensive Utilization Ways of present domestic employing except that producing Magnesium Carbonate Light 41-45 and magnesium oxide and plastic and rubber filler, also has the coal of producing boron magnesium phosphorus composite fertilizer, making honeycomb briquette reinforced and do architectural borax etc.
Magnesium in the boron mud generally all is that the form with magnesiumcarbonate exists, and is sometimes also different and difference arranged along with the mineral products of szaibelyite.The component of producing the boron mud of Magnesium Carbonate Light 41-45 is such: magnesium oxide 38%, silicon-dioxide 20%, carbonic acid gas 17%, boron oxide 3%, calcium oxide 3%, manganese oxide 0.11%, other are moisture content.
Boron mud washing lotion be handle and processing boron mud before the inevitable step of carrying out, be to extract because of the characteristic that boron trioxide is dissolved in hot water.Otherwise it can bring a lot of inconvenience when other materials are extracted in processing, therefore with steam or hot water the boric anhydride dissolving is formed boric acid in advance and is very important.The material of liquid-solid like this separation two aspects extracts all very convenient, and the material of extraction is also purer.
One should improve constantly the value of output object to the utilization of boron mud, and some markets of output product in short supply, that added value is big is to improve the economic benefit that boron mud utilizes.
Its two, well-known, calcium metaborate has suitable economic worth, therefore, in the technical scheme of handling boron mud refuse, should consider the recycling of the compound of boron as far as possible, as produce calcium metaborate.Having many uses of calcium metaborate: be used to make non-alkali glass, performance is more superior than boric acid, can improve tensile strength, increases resistivity, and reduces the boron evaporation rate; The component that can be used as frie retardant coating, rust proof paint; Can be used for raising the efficiency in the oil fuel such as gasoline, diesel oil; Can be used for reducing friction in the lubricating oil; The raw material that can be used as frostproofer; In addition, also in industries such as chemical industry, medicine, be used as catalyzer, sanitas, sterilant etc.
Summary of the invention
The present invention is intended to the utilization and the market requirement at boron mud waste material, and a kind of method for preparing calcium metaborate with boron mud washing lotion is provided.
To achieve these goals, the technical scheme of a kind of method for preparing calcium metaborate with boron mud washing lotion of the present invention is as follows.
A kind ofly prepare the method for calcium metaborate with boron mud washing lotion, boron mud was kept 1-2 hour to 60-80 ℃ with steam heating, with drying the liquid-solid separation of whizzer, the filtrate based on boric acid that obtains is boron mud washing lotion then;
With clarifying described boron mud washing lotion and calcium hydroxide reaction in corrosion resistant reactor, boric acid in its boron mud washing lotion and calcium hydroxide are 1 by the mass ratio of pure substance: 0.99-1.39, carrying out chemical reaction under stirring slowly, reaction generates the calcium metaborate precipitation; Filtration obtains the filter cake calcium metaborate, through cold water washing drying, drying and crushing and check the weight and be packaged to be the calcium metaborate product.
A kind of chemical equation for preparing the method for calcium metaborate with boron mud washing lotion of the present invention is:
B
2O
3+3H
2O＝＝＝＝2H
3BO
3
2H
3BO
3+Ca(OH)
2＝＝＝＝Ca(BO
2)
2+4H
2O
Beneficial effect of the present invention is: one, and the invention provides and a kind ofly prepare the method for calcium metaborate with boron mud washing lotion, this method has effectively utilized the material that separates boron mud to form, for to next step extraction of boron mud with utilize the smooth and easy of work to lay the first stone.Its two, the purposes of preparation calcium metaborate is wide, be the bigger best-selling product of a kind of economic worth, has improved the economic benefit of handling boron mud waste material, has created very big income repayment, is the model of the chemical industry comprehensive regulation and utilization.Its three, less investment, particularly suitable to the boron mud of used boron mud of process for producing Magnesium Carbonate Light 41-45 and similar components, we can say and opened up a new road.Its four, the purity height of preparation, quality is guaranteed.
Embodiment
Embodiment one
A kind ofly prepare the method for calcium metaborate with boron mud washing lotion, boron mud was kept 1-2 hour to 60-80 ℃ with steam heating, with drying the liquid-solid separation of whizzer, the filtrate based on boric acid that obtains is boron mud washing lotion then; Owing to contain boron oxide 3%, the per-cent solubility that can be calculated the boron mud washing lotion that obtains after the hydrolysis by the hydrolysis reaction formula of above-mentioned boron oxide is 5.04%.
Get 500 kilograms of boron mud washing lotions, with clarifying described boron mud washing lotion and calcium hydroxide reaction in corrosion resistant reactor, boric acid in its boron mud washing lotion and calcium hydroxide are 1: 0.99 by the mass ratio of pure substance, carrying out chemical reaction under stirring slowly, reaction generates 44.81 kilograms of calcium metaborate precipitations; Filtration obtains the filter cake calcium metaborate, through cold water washing drying, drying and crushing and check the weight and be packaged to be the calcium metaborate product.
Embodiment two
A kind ofly prepare the method for calcium metaborate with boron mud washing lotion, boron mud was kept 1-2 hour to 60-80 ℃ with steam heating, with drying the liquid-solid separation of whizzer, the filtrate based on boric acid that obtains is boron mud washing lotion then; Owing to contain boron oxide 3%, the per-cent solubility that can be calculated the boron mud washing lotion that obtains after the hydrolysis by the hydrolysis reaction formula of above-mentioned boron oxide is 5.04%.
Get 500 kilograms of boron mud washing lotions, with clarifying described boron mud washing lotion and calcium hydroxide reaction in corrosion resistant reactor, boric acid in its boron mud washing lotion and calcium hydroxide are 1: 1.19 by the mass ratio of pure substance, carrying out chemical reaction under stirring slowly, reaction generates 53.86 kilograms of calcium metaborate precipitations; Filtration obtains the filter cake calcium metaborate, through cold water washing drying, drying and crushing and check the weight and be packaged to be the calcium metaborate product.
Embodiment three
A kind ofly prepare the method for calcium metaborate with boron mud washing lotion, boron mud was kept 1-2 hour to 60-80 ℃ with steam heating, with drying the liquid-solid separation of whizzer, the filtrate based on boric acid that obtains is boron mud washing lotion then; Owing to contain boron oxide 3%, the per-cent solubility that can be calculated the boron mud washing lotion that obtains after the hydrolysis by the hydrolysis reaction formula of above-mentioned boron oxide is 5.04%.
Get 500 kilograms of boron mud washing lotions, with clarifying described boron mud washing lotion and calcium hydroxide reaction in corrosion resistant reactor, boric acid in its boron mud washing lotion and calcium hydroxide are 1: 1.39 by the mass ratio of pure substance, carrying out chemical reaction under stirring slowly, reaction generates 62.91 kilograms of calcium metaborate precipitations; Filtration obtains the filter cake calcium metaborate, through cold water washing drying, drying and crushing and check the weight and be packaged to be the calcium metaborate product.
Claims (1)
1. one kind prepares the method for calcium metaborate with boron mud washing lotion, it is characterized in that: boron mud was kept 1-2 hour to 60-80 ℃ with steam heating, and with drying the liquid-solid separation of whizzer, the filtrate based on boric acid that obtains is boron mud washing lotion then;
In corrosion resistant reactor, boric acid in its boron mud washing lotion and calcium hydroxide are 1 by the mass ratio of pure substance with clarifying described boron mud washing lotion and calcium hydroxide reaction: 0.99-1.39, under agitation carrying out chemical reaction, and reaction generates the calcium metaborate precipitation; Filtration obtains the filter cake calcium metaborate, through cold water washing drying, drying and crushing and be packaged to be the calcium metaborate product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010556358 CN102180477A (en) | 2010-11-23 | 2010-11-23 | Method for preparing calcium metaborate from boron sludge washing solution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010556358 CN102180477A (en) | 2010-11-23 | 2010-11-23 | Method for preparing calcium metaborate from boron sludge washing solution |
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|---|---|
| CN102180477A true CN102180477A (en) | 2011-09-14 |
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|---|---|---|---|
| CN 201010556358 Pending CN102180477A (en) | 2010-11-23 | 2010-11-23 | Method for preparing calcium metaborate from boron sludge washing solution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105462462A (en) * | 2015-11-24 | 2016-04-06 | 安徽省金盾涂料有限责任公司 | One-component water-based marine antirust coating and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309082A (en) * | 2001-03-19 | 2001-08-22 | 李洪岭 | Process for recovering boric acid from boron mud |
-
2010
- 2010-11-23 CN CN 201010556358 patent/CN102180477A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309082A (en) * | 2001-03-19 | 2001-08-22 | 李洪岭 | Process for recovering boric acid from boron mud |
Non-Patent Citations (1)
| Title |
|---|
| 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 20091015 王凯 由硼砂和消石灰制备偏硼酸钙和过硼酸钠 B015-35 1 , * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105462462A (en) * | 2015-11-24 | 2016-04-06 | 安徽省金盾涂料有限责任公司 | One-component water-based marine antirust coating and preparation method thereof |
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Application publication date: 20110914 |