CN1039193A - The semidry method acid heat activation of attapulgite clay - Google Patents
The semidry method acid heat activation of attapulgite clay Download PDFInfo
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- CN1039193A CN1039193A CN 89105893 CN89105893A CN1039193A CN 1039193 A CN1039193 A CN 1039193A CN 89105893 CN89105893 CN 89105893 CN 89105893 A CN89105893 A CN 89105893A CN 1039193 A CN1039193 A CN 1039193A
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- attapulgite
- activation
- clay
- attapulgite clay
- acid
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Abstract
The activation of attapulgite clay semidry method acid heat, technical process is simple.It is characterized in that utilizing the attapulgite clay of attapulgite content＞50% is raw material, through soaking, draining extruding, dry, abrasive dust are at small amounts of inorganic acid (HCl, H
2SO
4Deng), under the participation of water, Forced Mixing becomes the flowed powder of certain humidity, at 120～600 ℃ of following indirect certain hours, produces the concavo-convex excellent active soil of decolouring good adsorption performance.Replace active carbon to be used for decolouring, deodorizing, to remove poison in fields such as oil, chemical industry, grain and oil, environmental protection, have significant social, economic benefit.
Description
The present invention is a kind of semidry method acid heat activation of attapulgite clay.
Attapulgite clay has good colloidal property and decolouring absorption property, be widely used in purification of product such as oil, chemical industry, grain and oil, light industry, wine brewing, sugaring, also be used for except that fields such as poison, protection environmental protection, especially be used to the modification and the catalysis of chemical products, decolouring absorption, at oil drilling, medicine, chemical fertilizer and daily-use chemical industry, in the building materials, purposes is also extensive day by day.
For improving the decolouring absorption property of attapulgite clay, generally need original soil is activated.In the existing attapulgite clay activating technology, the dry method thermal activation is the main method that adopts for the activity that strengthens attapulgite clay both at home and abroad at present.This method is that ore dressing and the attapulgite clay that is dried to suitable moisture are broken into certain particle size or broken through the water logging bubble, be squeezed into sheet again after, the attapulgite of suitable final use is produced in dry and activation under drying device and proper temperature.Dry method thermal activation technological process is simple, but product decolouring and absorption property are relatively poor, also need advanced treating in some cases.This is only relevant with the thermal activation of heating with this method.Another kind of wet process acid activation attapulgite clay is that attapulgite clay and a certain amount of acid that will be crushed to certain particle size is made into the slurry that suspends by certain Tu Shui ratio, under stirring and proper temperature, carry out activation processing, then with big water gaging flushing activation back goods, make residual acid content reach set quota, at last with filtration cakes torrefaction, wear into fine powder, make the active attapulgite clay.For example, utilizing the sulfuric acid (or hydrochloric acid) of attapulgite clay and its weight about 20% to be made into the Tu Shui ratio is 1: 2～3 suspension slurry.Under condition of heating and stirring, activate a few hours, wash the slurry that suspends again with water, after free acid reaches set quota, collect mud cake and carry out drying, the concavo-convex excellent active soil that levigate acquisition decolorizing ability is higher.This method process conditions complexity, equipment corrosion is serious, the energy consumption height, the sewage disposal expense is also higher, thereby the cost height, and the production cycle is long, is difficult to form large-scale production capacity.In order to improve wet process acid activation, United States Patent (USP): uS 4120782(Cl.208-305; C10 G 25/12) 03.1.1978 once used the attapulgite of 1% anhydrous HCl gas treatment dry production, to improve the processing capacity of clay absorbent, it is bigger that this method is implemented difficulty, and the absorption property of activated clay also is difficult to compare favourably with the wet process acid activation simultaneously.
The objective of the invention is to propose a kind ofly to cut down the consumption of energy and eliminate environmental pollution substantially, with small amount of acid and water, the easy attapulgite semidry method acid heat activation that can strengthen the decolouring absorption property again of production technology.
Attapulgite clay semidry method acid heat of the present invention activation, it is few to take carbonate content, and sand, montmorillonite and hydromica equal size are few, and attapulgite content is greater than 50% clay raw ore, through being broken into 1-2cm
3, through ore dressing as with manually selecting deproteinized stone, quartz wedge and organic impurities etc., soak, draining is squeezed into thin slice, dry abrasive dust screening, again with hydrochloric acid, sulfuric acid and low amounts of water batch mixing after, through acid heat activation, abrasive dust is processed into the high activity attapulgite of decolouring good adsorption performance.
Technical characterictic of the present invention is, in the activation of semidry method acid heat, used acid is inorganic acid, can is hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid and other acid more intense acid that consumption is the 1-15% of clay weight, amount of water can be 15～70% of clay weight, to be mixed into flowable granule.Under 120～600 ℃ temperature,, wear into 160～240 purpose high activity attapulgites through full and uniform activation in 10～60 minutes.
Before another characteristics of the present invention are activation, clay breeze and inorganic acid and water are mixed into the flowable powder of certain humidity in forced mixer, for acid and clay are mixed, in the attapulgite clay that the aqueous acid of dilution is rolled with vaporific spray, make batch mixing even, low temperature indirect heating in adopting in the activation is to reach the purpose of acid heat activation.
The embodiment of the invention 1: get and push and dry abrasive dust, moisture content is 100 parts of the attapulgites of 7-20%, sneaking into concentration with spray pattern under stirring condition is 20～70 parts of 2～20% aqueous hydrochloric acid solutions, after batch mixing is even, under 120～600 ℃ temperature, activate 10～30 minutes, wear into 160-240 purpose fine powder.Can get a kind of pale red or canescence, decolorizing ability is 290 ± 10 concavo-convex excellent active soil.
Embodiment 2: get and push and dry abrasive dust, moisture content is 100 parts of the attapulgite clays of 7-20%, and under stirring condition, sneaking into concentration with spray pattern is 20～70 parts of 1%～25% aqueous sulfuric acids, after mixing.Activate 10～30 minutes under 120～500 ℃ of temperature, wear into 160～240 purpose fine powders, can get a kind of little yellow or canescence, decolorizing ability is 295 ± 10 concavo-convex excellent active soil.
The high activity attapulgite made from the present invention can replace active carbon in many decolourings, deodorizing, except poison and association area owing to simplified production technology, elimination environmental pollution, cost low, activate one ton of concave convex rod active soil and can have a net gain more than 200 yuan. If replace active carbon with it, be used for decolouring, deodorizing, save more than 3000 yuan of investment except poison is per ton, have significant social and economic benefits.
Claims (2)
1, the activation of attapulgite clay is characterized in that be raw material with attapulgite content greater than 50% clay, produces the high activity attapulgite, utilizes the activation of semidry method acid heat.
2, according to the activation of the described attapulgite clay of claim 1, it is characterized in that moisture content is the attapulgite clay powder of 7-20% and the inorganic acid of clay weight 1-15%, the water of example hydrochloric acid, sulfuric acid and clay weight 15～70% is mixed into flowable granule, under 120-600 ℃ temperature, activate 10～60 minutes, wear into 160-240 purpose high activity attapulgite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105893 CN1023019C (en) | 1989-04-11 | 1989-04-11 | Semi-dry acid method for hot activation of adobe clay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105893 CN1023019C (en) | 1989-04-11 | 1989-04-11 | Semi-dry acid method for hot activation of adobe clay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1039193A true CN1039193A (en) | 1990-01-31 |
| CN1023019C CN1023019C (en) | 1993-12-08 |
Family
ID=4856527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105893 Expired - Fee Related CN1023019C (en) | 1989-04-11 | 1989-04-11 | Semi-dry acid method for hot activation of adobe clay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1023019C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1296402C (en) * | 2004-10-27 | 2007-01-24 | 兰州理工大学 | Process for preparing active nano attapulgite intermediate |
| CN1317067C (en) * | 2005-06-20 | 2007-05-23 | 许庆华 | Process for improving viscosity of attapulgite clay |
| CN100435932C (en) * | 2003-04-22 | 2008-11-26 | 淮阴工学院 | Method for preparing desiccative for food-processing apparatus by using attapulgite clay |
| CN102580703A (en) * | 2012-03-19 | 2012-07-18 | 张国强 | Method for preparing efficient air purification material |
| CN103041789A (en) * | 2012-12-26 | 2013-04-17 | 青岛佰众化工技术有限公司 | Polylactic acid/palygorskite/polyethylene glycol absorption film |
| CN103495380A (en) * | 2013-08-30 | 2014-01-08 | 蚌埠首创滤清器有限公司 | Modified activated carbon air adsorbent and its preparation method |
| CN103785337A (en) * | 2013-12-11 | 2014-05-14 | 甘肃金宇生态环境工程有限公司 | Activation method of natural micro-nano nonmetal PAL material |
| CN106552613A (en) * | 2015-09-24 | 2017-04-05 | 刘从荡 | A kind of semidry method he acid-heat activation of attapulgite clay |
| CN110508238A (en) * | 2019-08-20 | 2019-11-29 | 中科院广州能源所盱眙凹土研发中心 | The method that semidry method acidification prepares concave convex rod ground mass atlapulgite |
| CN110921805A (en) * | 2019-12-13 | 2020-03-27 | 北京化工大学 | Attapulgite clay reduction-magnetic separation coupling continuous iron removal whitening purification method |
-
1989
- 1989-04-11 CN CN 89105893 patent/CN1023019C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100435932C (en) * | 2003-04-22 | 2008-11-26 | 淮阴工学院 | Method for preparing desiccative for food-processing apparatus by using attapulgite clay |
| CN1296402C (en) * | 2004-10-27 | 2007-01-24 | 兰州理工大学 | Process for preparing active nano attapulgite intermediate |
| CN1317067C (en) * | 2005-06-20 | 2007-05-23 | 许庆华 | Process for improving viscosity of attapulgite clay |
| CN102580703A (en) * | 2012-03-19 | 2012-07-18 | 张国强 | Method for preparing efficient air purification material |
| CN103041789A (en) * | 2012-12-26 | 2013-04-17 | 青岛佰众化工技术有限公司 | Polylactic acid/palygorskite/polyethylene glycol absorption film |
| CN103495380A (en) * | 2013-08-30 | 2014-01-08 | 蚌埠首创滤清器有限公司 | Modified activated carbon air adsorbent and its preparation method |
| CN103785337A (en) * | 2013-12-11 | 2014-05-14 | 甘肃金宇生态环境工程有限公司 | Activation method of natural micro-nano nonmetal PAL material |
| CN106552613A (en) * | 2015-09-24 | 2017-04-05 | 刘从荡 | A kind of semidry method he acid-heat activation of attapulgite clay |
| CN110508238A (en) * | 2019-08-20 | 2019-11-29 | 中科院广州能源所盱眙凹土研发中心 | The method that semidry method acidification prepares concave convex rod ground mass atlapulgite |
| CN110921805A (en) * | 2019-12-13 | 2020-03-27 | 北京化工大学 | Attapulgite clay reduction-magnetic separation coupling continuous iron removal whitening purification method |
| CN110921805B (en) * | 2019-12-13 | 2021-07-16 | 北京化工大学 | Attapulgite clay reduction-magnetic separation coupling continuous iron removal whitening purification method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1023019C (en) | 1993-12-08 |
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