CN102408116B - Method for improving viscosity of attapulgite clay by seawater immersion - Google Patents
Method for improving viscosity of attapulgite clay by seawater immersion Download PDFInfo
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- CN102408116B CN102408116B CN 201110240010 CN201110240010A CN102408116B CN 102408116 B CN102408116 B CN 102408116B CN 201110240010 CN201110240010 CN 201110240010 CN 201110240010 A CN201110240010 A CN 201110240010A CN 102408116 B CN102408116 B CN 102408116B
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Abstract
The invention discloses a method for improving viscosity of attapulgite clay by seawater immersion, which comprises the following steps of: dispersing attapulgite clay in solid-to-liquid ratio of 5-20% in seawater; mechanically stirring for 1-3h; passing 250-mesh sieve to remove impurities such as quartz and the like; standing suspension solution for a certain time; centrifuging and separating; drying; and grinding to obtain product. The invention has simple technology without addition of any assistant, and the product can be applied to the fields of coating, paint, printing ink, petroleum drilling mud, textile slurry and the like as thickening, suspension and antisag agent.
Description
Technical field
The invention belongs to nonmetalliferous ore deep processing field, be specifically related to the method that a kind of sea water immersion improves the attapulgite clay viscosity.
Background technology
Attapulgite clay be a kind of with the attapulgite be main ingredient contain Shuifu County's magnesium silicate clay mineral, have unique rhabdolith form and special Surface Physical Chemistry character.The 3 D stereo chain that the attapulgite clay crystalline structure contains; After in water, disperseing; The rod intergranular overlaps each other and forms mixed and disorderly solid space reticulated structure; Under relatively low concentration, can form full-bodied suspension-s, thickening, suspension and the anti-sagging agent of making coating, paint, printing ink, oil drilling slurry, spinning sizing agent etc. commonly used.But natural attapulgite clay is often with impurity such as pearl opal, quartz and carbonate, simultaneously stronger hydrogen bond and electrostatic force, and viscosity is lower, and colloidality, suspension and dispersiveness are all relatively poor, thereby have limited the performance of attapulgite clay colloidal property.
At present the method for raising attapulgite clay viscosity commonly used mainly is to add physical methods such as acvator or tackifier and collaborative extruding, high-speed stirring, microwave treatment, high pressure shearing to reach and increase glutinous purpose." improve the complete processing of attapulgite clay viscosity " (publication number CN1699259A) like Chinese patent; Be the attapulgite clay after the natural weathering to be soaked, stir, pushes, dries the back add super absorbent resin and Mierocrystalline cellulose in the yellow soda ash dilute solution, stirring, abrasive dust form.But super absorbent resin and Mierocrystalline cellulose price are higher relatively, and when the quantity not sufficient that adds or when excessive, also possibly cause flocculation and produce deposition at aqueous phase.Chinese patent " technique for producing high-viscosity adhesive ' Aotu ' soil " (publication number CN1187461A), it is a raw material with the attapulgite clay ore deposit, through ore dressing, fragmentation, adds and rolls after acvator soaks again, dries, pulverizes and form.The acvator that adds is MgO or Mg (OH)
2, this method is to improve the attapulgite clay viscosity in the present industrial application to use the widest method.Chinese patent " a kind of technology that improves the attapulgite viscosity with pure physical method rapidly and high-effectively " (publication number CN101224893A); Be to be raw material with the attapulgite clay; Through soaking, repeat secondary extrusion, water mixing, freezing, heat treated after, pulverize and obtain high sticking attapulgite clay.Be difficult to large-scale production because this arts demand carries out repeatedly freezing, extruding, heats, and operating procedure is loaded down with trivial details, the industrialization cost increases.
Mg in the attapulgite clay crystalline structure
2+, owing to Al in becoming the ore deposit process
3+Or Fe
3+To Mg
2+Isomorphous replacement, can also get into 1 or 2 hydrogen ions or other Equivalents in the system, just can make the attapulgite clay can stable suspersion in water medium.General method commonly used is with ionic radius is less but the Na that hydration shell is thicker
+, K
+Carry out the compensation of electric charge.Seawater is a kind of very complicated polycomponent aqueous solution.There is a large amount of Na in the seawater
+, K
+, Ca
2+, Mg
2+Ion has higher salinity.The average salinity of each sea area surface water of China, the Bohai Sea 29.95, the northern Huanghai Sea 30.71, South Yellow Sea 31.00, the East Sea 28.9, the South Sea northern 29.46.Therefore; Use the sea water immersion attapulgite clay, utilize the metals ion that exists in the seawater that attapulgite clay is carried out charge compensation, and under abundant infiltration condition; Form hydration layer on the attapulgite clay surface; Improve the intergranular state of aggregation of attapulgite, the suspending stabilized performance of attapulgite clay in water medium increased, viscosity improves.
Summary of the invention
The present invention provides a kind of sea water immersion to improve the method for attapulgite clay viscosity.Its objective is the problems such as the existing attapulgite clay viscosity of China is lower, range of application is wideless that solve.
The technical problem that the present invention will solve realizes through following scheme:
A kind of sea water immersion improves the method for attapulgite clay viscosity, it is characterized in that attapulgite clay is scattered in the seawater by solid-to-liquid ratio 5-20%, behind the mechanical stirring 1-3h; Cross 250 mesh sieves and remove impurity such as quartz, with the static placement of suspension-s, behind the immersion certain hour; Spinning; Drying is pulverized, and obtains the attapulgite clay product.
Below the present invention is done further description, process step is following:
1, attapulgite content is pushed through twin rollers at 50% attapulgite clay raw ore, make the thick sheet attapulgite clay of 0.5～2mm; Or make greater than 200 purpose powder attapulgite clays through milling;
2, under whipped state, sheet or powder shaped attapulgite clay are added in the seawater, mechanical stirring 1-3h processes the suspension-s of concentration at 5-20%; Wherein used seawater comes from the Huanghai Sea, the East Sea, the South Sea, the seawater of offshore waters such as the North Sea;
3, suspension-s is crossed 250 mesh sieves and removes static placement behind the impurity such as quartz, soak 5-60d after, spinning, drying is pulverized, and obtains modified attapulgite clay product.
The present invention has following advantage:
Thereby the modification that seawater is used for attapulgite clay improves the attapulgite clay viscosity, and this method is not added any medicament, and is nontoxic; Production technique is simple; Cost has low cost, less energy-consumption and eco-friendly characteristics, is easy to realize scale operation.
Embodiment
Embodiment one
With attapulgite content at 62% attapulgite clay raw ore after the twin rollers extruding, make the thick sheet attapulgite clay of 2mm; Under whipped state, with sheet attapulgite clay (viscosity: 786mPa.s) add in the Huanghai Sea seawater, be mixed with attapulgite clay concentration and be 15% suspension-s; After stirring 2h, cross 250 mesh sieves and remove impurity such as quartz, behind the static placement of suspension-s 5d, spinning, drying is pulverized, and obtains the attapulgite clay product, and k value is 2224mPa.s.
Embodiment two
With attapulgite content at 75% attapulgite clay raw ore after the twin rollers extruding, make the thick sheet attapulgite clay of 1mm; Under whipped state, with sheet attapulgite clay (viscosity: 882mPa.s) add in the seawater of the East Sea, be mixed with attapulgite clay concentration and be 10% suspension-s; After stirring 2h, cross 250 mesh sieves and remove impurity such as quartz, behind the static placement of suspension-s 15d, spinning, drying is pulverized, and obtains the attapulgite clay product, and k value is 2428mPa.s.
Embodiment three
With attapulgite content at 82% attapulgite clay raw ore through to after milling, make greater than 200 purpose powdery attapulgite clays; Under whipped state, with powdery attapulgite clay (viscosity: 956mPa.s) add in the seawater of the North Sea, be mixed with attapulgite clay concentration and be 8% suspension-s; After stirring 3h, cross 250 mesh sieves and remove impurity such as quartz, behind the static placement of suspension-s 30d, spinning, drying is pulverized, and obtains the attapulgite clay product, and k value is 2616mPa.s.
Embodiment four
With attapulgite content at 55% attapulgite clay raw ore through to after milling, make greater than 200 purpose powdery attapulgite clays; Under whipped state, with powdery attapulgite clay (viscosity: 456mPa.s) add in the seawater of the South Sea, be mixed with attapulgite clay concentration and be 20% suspension-s; After stirring 3h, cross 250 mesh sieves and remove impurity such as quartz, behind the static placement of suspension-s 60d, spinning, drying is pulverized, and obtains the attapulgite clay product, and k value is 1325mPa.s.
Claims (5)
1. the method for a sea water immersion raising attapulgite clay viscosity is characterized in that, attapulgite clay is scattered in the seawater by solid-to-liquid ratio 5-20%; Behind the mechanical stirring 1-3h, cross 250 mesh sieves and remove impurity, the static placement of suspension-s; After soaking certain hour, spinning, drying; Pulverize, obtain the attapulgite clay product.
2. sea water immersion according to claim 1 improves the method for attapulgite clay viscosity, it is characterized in that attapulgite content is more than 50% in the used attapulgite clay.
3. sea water immersion according to claim 1 improves the method for attapulgite clay viscosity, it is characterized in that used attapulgite clay carries out pair roller or the processing of milling.
4. sea water immersion according to claim 1 improves the method for attapulgite clay viscosity, it is characterized in that seawater comes from the Huanghai Sea, the East Sea, the South Sea, the seawater of offshore waters, the North Sea.
5. sea water immersion according to claim 1 improves the method for attapulgite clay viscosity, it is characterized in that soak time is 5-60d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110240010 CN102408116B (en) | 2011-08-22 | 2011-08-22 | Method for improving viscosity of attapulgite clay by seawater immersion |
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|---|---|---|---|
| CN 201110240010 CN102408116B (en) | 2011-08-22 | 2011-08-22 | Method for improving viscosity of attapulgite clay by seawater immersion |
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| CN102408116B true CN102408116B (en) | 2012-12-12 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102701231A (en) * | 2012-06-15 | 2012-10-03 | 中国科学院兰州化学物理研究所盱眙凹土应用技术研发中心 | Method for improving colloid performance of attapulgite clay by using brine |
| CN115606587B (en) * | 2022-10-13 | 2024-03-22 | 河北工业大学 | Method for preparing silver chloride/low-grade attapulgite clay composite antibacterial agent by utilizing seawater |
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| US6806233B2 (en) * | 1996-08-02 | 2004-10-19 | M-I Llc | Methods of using reversible phase oil based drilling fluid |
| CN1187461A (en) * | 1997-08-16 | 1998-07-15 | 安徽省明光凹凸棒粘土材料厂 | Technique for producing high-viscosity adhesive 'Aotu' soil |
| CN1317067C (en) * | 2005-06-20 | 2007-05-23 | 许庆华 | Process for improving viscosity of attapulgite clay |
| CN100556806C (en) * | 2008-02-03 | 2009-11-04 | 淮阴工学院 | A kind of technology that improves viscous of attapulgite with pure physical method rapidly and high-effectively |
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