CN1008631B - Process for artificial sodium based bentonite - Google Patents
Process for artificial sodium based bentoniteInfo
- Publication number
- CN1008631B CN1008631B CN 85105253 CN85105253A CN1008631B CN 1008631 B CN1008631 B CN 1008631B CN 85105253 CN85105253 CN 85105253 CN 85105253 A CN85105253 A CN 85105253A CN 1008631 B CN1008631 B CN 1008631B
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- temperature
- soil
- sodium
- present
- screw extrusion
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Abstract
The present invention relates to a technological process for manually modifying calcium bentonite into sodium bentonite, and realizes continuous operation from feeding materials to outputting products. The present invention comprises an electronic system, a screw extrusion press and a cylinder drier, wherein the electronic system far transmits, remotely controls and automatically regulates the ratio of solid weight to liquid flow quantity. The electronic system and the screw extrusion press carry out effective sodium exchange reaction. The cylinder drier can regulate and control the temperature of an inlet and an outlet, and drying time, and carries out drying for short time. Finally, the sodium bentonite is delivered to a winnowing pulverizator for pulverization, grading and packaging. The present invention is characterized in that the present invention enhances continuous operation efficiency, has high quality, stable performance and wide applicability, and saves raw materials.
Description
The present invention relates to a kind of technical process that is used to make the artificial sodium bentonite of drilling mud.
Wilkinite (is commonly called as
Soil) be the basic material of drilling mud.Drilling well year is measured about 1,500,000 tons with soil in the world.About 200,000 tons of China.External drilling mud all uses sodium bentonite, and regulation must meet API(American Petroleum Institute (API)) and association of OCMA(European petroleum Company Material) two standards, commodity market can be entered.
China's sodium bentonite resource is extremely scarce, and that calcium bentonite is contained is very abundant, but the latter adds the soda ash pulping, does not nearly all meet API and OCMA standard.The calcium land reform must be carried out the artificial natridization, calcium soil is converted into sodium soil, just might reach two standards.
Calcium bentonite artificial natridization principle can be used the chemical equation approximate expression:
Physics or the mechanical means of finishing above-mentioned reaction are diversified, but quality product and technique effect differ very different.Italy once adopted wheel roller mixing, pressurization, to realize natridization reaction, stack aging and air-dry in the open, grinding and processing then, whole flow process needs ten days.The U.S. (U.S.P4,371,626) has adopted screw extrusion press to carry out the upgrading of sodium soil inferior, need not batching and solution, also uses natural air drying.Two kinds of processing methodes do not have continuity; Because artificial sodium penus heat-sensitive material, heating means are improper, and quality product will be degenerated, and therefore, aforesaid method all dare not be used rapid drying, has caused the discontinuity of technical process.
The objective of the invention is to: study the technical process of the productive manpower sodium soil of a kind of successive, mechanize and automatization, reequip, design relevant processing unit and instrument, and the significant parameter in the autochthonal runoff yield journey of artificial sodium is provided.To improve and to guarantee quality product, meet and exceed API and OCMA standard.
Invention is achieved in that
Single shaft or double-shaft spiral extrusion machine repack head into circular mesh outlet.Calcium bentonite piece material is broken into particulate less than 4 millimeters through jaw crusher, roll crusher, measures feed with lift to electronic scales, enters mixing machine.Simultaneously, also spray into mixing machine with the heavy proportional soda ash solution of soil.Wetting through abundant mixing, material enters screw extrusion press, 80 to 150 ℃ of high temperature, be preferably in 100-120 ℃, high compression ratio is 1: 2 to 1: 5, and best 1: 3 following with shearing, carry out the sodium permutoid reaction, calcium bentonite is modified into sodium bentonite, and product is cylindric discharge or explosion is the fragment ejection.Wet feed is sent into roasting kiln and whizzer oven dry through travelling belt, and siccative is delivered to Raymond mill by discharge chamber, pulverizing, classification and packing.Thereby realize full-range working continuously.
The control of water and soil ratio is to realize by the solid weight and the self-regulating in proportion electronic monitoring and control system of liquid flow rate of a cover energy teletransmission, remote control.The electronic scales of band vibratory feeder, but teletransmission is instantaneous and the signal of two weight of accumulative total.Alkaline solution is through motor-operated control valve and photoelectricity spinner-type flowmeter, its instantaneous and also available signal teletransmission of integrated flow.In the watch-keeping cubicle, weight of material and flux of alkaline liquor compare on monitoring instrument, liquid-solid amount ratio is 25-35%, is preferably 30%, when departing from the soil ratio of regulation, monitoring instrument sends instruction, the remote control adjustment motor-operated control valve, till flow meter signal reached predetermined proportional numers, alkaline concentration was 15 to 25%, decide on the alkali number that adds that different calcium soil needs, add alkali number can be 2-7% that soil measures suitable add the important factor that alkali number is a quality product.Therefore, the control soil ratio is controlled exactly and is added alkali number, to guarantee the sodium quality.
The present invention adopts whizzer to carry out dry in short-term to artificial sodium soil wet feed.Inlet temperature is controlled at 500-750 ℃, and preferably 650-700 ℃, temperature out is controlled at 80 to 200 ℃, be preferably 100-150 ℃, drying time was controlled at 10-30 minute best 12-18 minute, and material moisture content is reduced to 5-8% by 30-35%, and quality product is not affected.
Product is pulverized must use the winnowing type pulverizer, as Raymond mill, blade tooth formula or hammer crusher etc., can not adopt ball mill, product granularity 100-200 order.
Technical process by the present invention's narration is put to implement.The line capacity of building up is five kilotons (every year), and the calcium bentonite that Gaoyang, Weifang City, Shandong Province and emperor's son-in-law seek two places carried out sodium modification, it is 5.5-6% that Gaoyang soil adds alkali number, and the emperor's son-in-law seeks soil, and to add alkali number be 4.0-4.5%, joins slurry than the calcium soil scene and adds alkali number and lack 0.5-1%.Product detects and tests at indoor and situ of drilling well.
This technical process effect enabled production quality is estimated.
One of examination and test of products method is to carry out the mud property test by API standard (the OCMA standard is lower).Table 1 illustrates two kinds of performance index before and after the calcium soil sodium.(table 1 is seen the literary composition back)
Two of examination and test of products method is that Laboratory Instruments is carried out physics and chemistry and detected, comprise infrared spectrophotometer, * x ray diffractometer x, differential thermal analyzer, counting micro particles instrument, zeta potential instrument and flame luminosity instrument etc.But the quantitative analysis that above-mentioned instrument has, what have can only qualitative analysis.Detected result shows that calcium soil has been converted into sodium soil.With * ray diffraction is an example, differentiates that the calcium soil and the main foundation of sodium soil are the lattice spacings of d001 face, typical calcium soil is 15.5
, typical sodium soil is 12.5
, 12.5-15.5
Be transition type.The Shandong emperor's son-in-law is 15.26 before seeking land reform
, be 12.52 after the modification
Fig. 1 is artificial sodium earth process schema
The dried piece material of calcium soil (about moisture 10%) enters jaw crushing 2 by feed bin 1, is broken into the 6-10 mm granules, further is broken into fine silt less than 4 millimeters through roll crusher 3 again.Deliver to vibratory feeder 5 and electronic scales 6 with lift 4, material enters mixing machine 7.Meanwhile, the soda ash solution in the lye tank 11 is delivered to level tank 13 by pump 12, through motor-operated control valve 14 and photoelectricity teletransmission spinner-type flowmeter 15, sprays into mixing machine 7 by predetermined soil ratio.Tu Shui is a signal input monitoring instrument 16 by electronic scales 6 and under meter 15 than control, is realized by the size of latter's remote control adjustment motor-operated control valve.The wetting material of mixing enters screw extrusion press 8, carries out the sodium permutoid reaction, is extruded into the cylinder bar product of diameter 8-10 millimeter through mud extraction plate 9.Product is sent into oven dry in the roasting kiln 17 by rotary conveyor 10.Roasting kiln fuel is through fuel tank (diesel oil, heavy oil, residual oil) 22 and under meter 23, and under gas blower 24 effects, the burner 25 through being with nozzle sprays in the stove, by thermocouple thermometer 18 indication inlet temperatures.Material at high temperature enters whizzer 19, is discharged by discharge chamber 20 then, and the discharge chamber temperature is measured by thermocouple thermometer 21.Evaporation steam is extracted out to ventilator 27 through waste heat water pot 26, and the minute quantity dust is caught dirt through cyclone dust 28, and tail vapour leads to chimney.Siccative is delivered to Raymond mill 30 through lift 29, and by batch scale 31 weighings, the product of packing 32 is delivered to stockyard 33.
Fig. 2 is bentonitic IR spectra of PVDC, and pure yellow soda ash (soda ash) absorption peak is 1420 to 1440 centimetres
-1, lime carbonate (aragonite) absorption peak is 1470-1490 centimetre
-1Curve 1 is former (calcium) soil among Fig. 2, and (1410 centimetres in a small amount of calcite is only arranged
-1); Curve 2 is done for original soil and is mixed yellow soda ash, so absorption peak is in 1420-1440 centimetre
-1Between; Curve 3 is artificial sodium soil, and yellow soda ash is converted into lime carbonate (aragonite) behind the natridization reaction, so crest moves to 1490 centimetres
-1Crest is asymmetric, and the not yellow soda ash of exchange of an also residual part is described in the soil.
Fig. 3 is the wilkinite differential thermal analysis curve, and the key distinction sign of calcium soil and sodium soil is the curve shape between 100 to 200 degree, and it is calcium soil that Zhi Fengzhe is arranged, and no Zhi Fengzhe is a sodium soil.As seen from the figure, curve 1 is a protocalcium soil curve, and curve 2 is the differential thermal curve of artificial sodium soil.
Claims (4)
1, artificial sodium earth process method comprises extruding, drying, pulverizes, and it is characterized in that forming continuous operation method by following step:
A. broken: that calcium bentonite with jaw crusher, roll crusher, is broken into the particulate less than 4mm;
B. prepare burden, mix: with lift the calcium bentonite powder is delivered to vibratory feeder, enter mixing machine through electronic scales, simultaneously, soda ash (industrial Na
2CO
3) solution is by being pumped to level tank, sprays into mixing machine through motor-operated control valve and flow, its liquid-solid ratio is 25-35%, soda ash solution concentration is 15-25%, and is wetting through the mixing machine mixing;
C. extruding: mixing material screw extrusion press, 80 to 150 ℃ of temperature, compression ratio is under 1: 2 to 1: 5 condition, to carry out natridization reaction, and along circular mesh outlet discharge cylinder strip or shred product;
D. dry: squeezing prod is sent into roasting kiln with rotary conveyor, enters whizzer under 500-750 ℃ of high temperature, and through oven dry in 10-30 minute, temperature out was 80-200 ℃;
E. pulverize: siccative is ground into the 100-200 order through lift with the winnowing type pulverizer;
2, by the described artificial sodium earth process method of claim 1, the liquid-solid ratio that it is characterized in that batch mixes is 30%;
3, by the described artificial sodium earth process method of claim 1, it is characterized in that the screw extrusion temperature is 100-120 ℃, compression ratio is 1: 3;
4, by the described artificial sodium earth process method of claim 1, it is characterized in that dry inlet temperature is 650-700 ℃; Temperature out is 100-150 ℃, and drying time is 12-18 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85105253 CN1008631B (en) | 1985-07-11 | 1985-07-11 | Process for artificial sodium based bentonite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85105253 CN1008631B (en) | 1985-07-11 | 1985-07-11 | Process for artificial sodium based bentonite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85105253A CN85105253A (en) | 1987-04-15 |
| CN1008631B true CN1008631B (en) | 1990-07-04 |
Family
ID=4794358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85105253 Expired CN1008631B (en) | 1985-07-11 | 1985-07-11 | Process for artificial sodium based bentonite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008631B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061946C (en) * | 1997-03-31 | 2001-02-14 | 孙忠 | Process for producing sodium-base bentonite from calcium-base bentonite |
| CN101774596B (en) * | 2010-01-13 | 2012-11-14 | 中国非金属矿工业公司 | Cheto-type bentonite sodium modification method and device thereof |
| CN104279839B (en) * | 2013-07-12 | 2016-06-08 | 浙江同泽新材料有限公司 | Combination drying all-in-one and Mixture drying method |
| CN103979564B (en) * | 2014-06-01 | 2016-01-27 | 广西上思县富石矿业有限公司 | Wilkinite after sodium |
| CN107381588A (en) * | 2017-08-25 | 2017-11-24 | 芜湖飞尚非金属材料有限公司 | A kind of bentonite sodium chemical industry skill |
-
1985
- 1985-07-11 CN CN 85105253 patent/CN1008631B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85105253A (en) | 1987-04-15 |
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