CN104831581A - Preparation method and use of lignin sulfonate-bentonite composite particle retention agent - Google Patents
Preparation method and use of lignin sulfonate-bentonite composite particle retention agent Download PDFInfo
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- CN104831581A CN104831581A CN201510196310.XA CN201510196310A CN104831581A CN 104831581 A CN104831581 A CN 104831581A CN 201510196310 A CN201510196310 A CN 201510196310A CN 104831581 A CN104831581 A CN 104831581A
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Abstract
The invention relates to a preparation method and use of a lignin sulfonate-bentonite composite particle retention agent. The preparation method comprises adding crushed bentonite raw ore into a sodium carbonate-lignin sulfonate solution, adding water into the solution until a bentonite mass concentration is in a range of 20-80%, and carrying out extrusion sodium modification treatment by a screw extruder to obtain the lignin sulfonate-bentonite composite modified particles. In paper production, cationic polyacrylamide is added into paper pulp according to a use ratio of 0.02-0.1% before bentonite addtion, and then the lignin sulfonate-bentonite composite modified particles are added into the paper pulp according to a use ratio of 0.05-0.5% before or after pressurized screen addition. The invention provides the novel modification method of the lignin sulfonate-bentonite composite particle retention agent. The method improves lignin sulfonate-bentonite composite particle retention agent quality and improves retention and drainage performances of the retention agent in papermaking.
Description
Technical field
The present invention relates to a kind of preparation method and application of composite modified bentonite microparticle retention aid.
Background technology
1986, the people such as Langley, Litchfield have studied the use of bentonite microparticles in paper making wet part, indicated the appearance of microparticle retention and drainage system.This system has good retention and drainage effect to paper stock, therefore, just obtains apply rapidly once appearance.Current domestic and international most of modern paper machine has adopted this retention aid and filtering aid system all.In this retention aid and filtering aid system, the method for modifying of bentonite microparticles retention agent is: natural montmorillonite first washes with water, screen, and removes impurity, to improve the content of effective ingredient montmorillonite in bentonite, then, carry out modification with NaOH or sodium carbonate etc., make bentonite sodium.But this method of modifying exists following shortcoming: one, the density of the impurity such as natural montmorillonite and fine sand is substantially suitable, and all water insoluble, and therefore, magazins' layout difficulty, causes effective component content on the low side; Two, bentonite is after sodium modification, and bentonite has become hydrated state, gel, although, the at this moment easy precipitate and separate of impurity, the bentonite concentration after sodium modification generally only has less than 20%, cannot dewater with fashion of extrusion, convection drying, cost is very high again; Three, bentonite electronegativity is not high, affects its result of use.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose preparation method and the application of a kind of lignosulphonates-bentonite composite particles retention agent.
Central scope of the present invention: after bentonite origin breeze is broken, the mass concentration of the modulation 20%-80% that adds water, adds sodium carbonate and sodium lignosulfonate, in screw extruder, carries out extrusion modification, obtained product.
The inventive method is specifically: first, bentonite raw ore mechanical crushing is to 200-600 order, add sodium carbonate and lignosulphonic acid sodium solution, sodium carbonate addition is 1%-10%, sodium lignosulfonate addition 0.5%-10%(is relative to bentonitic mass percent), then, adding water and being adjusted to bentonitic mass concentration is 20%-80%, mix, carry out the process of extruding sodium in screw extruder, extruding reaction temperature is 30-100 DEG C, extrusion time 5-50 minute, final drying, pulverizes, obtained lignosulphonates-sodium carbonate composite modified bentonite particulate.
Apply in paper production: lignosulphonates-sodium carbonate composite modified bentonite particulate is diluted with water to 0.1%-5% mass concentration, then with cationic polyacrylamide with the use of.Cationic polyacrylamide need add in paper pulp before bentonite, and as added before fan pump or pressurized screen, addition is 0.02%-0.1%; Composite modified bentonite particulate added before or after pressurized screen, and addition 0.05%-0.5%(is the mass percent relative to over dry slurry).
Beneficial effect of the present invention: the present invention proposes a kind of new modified method of bentonite microparticles retention agent, improves the quality of bentonite microparticles retention agent, improves the retention aid and filtering aid performance that it uses in papermaking.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
The inventive method is specifically: first, bentonite raw ore mechanical crushing is to 200-600 order, add sodium carbonate and lignosulphonic acid sodium solution, sodium carbonate addition is 1%-10%, sodium lignosulfonate addition 0.5%-10%(is relative to bentonitic mass percent), then, adding water and being adjusted to bentonitic mass concentration is 20%-80%, mix, the process of extruding sodium is carried out in screw extruder, extruding reaction temperature is 30-100 DEG C, extrusion time 5-50 minute, due to sodium ion replace calcium ion montmorillonite layer between substitution effect, sodium lignosulfonate enters the expansion in situ effect between montmorillonite layer, the extrusion shearing effect of screw extruding shearing machine energy, and the synergy of three, improve alta-mud modification effect, reduce the granularity of bentonite microparticles, improve its elecrtonegativity.Then, dry, pulverize, obtained lignosulphonates-sodium carbonate composite modified bentonite particulate.
Apply in paper production: lignosulphonates-sodium carbonate composite modified bentonite particulate is diluted with water to 0.1%-5% mass concentration, then with cationic polyacrylamide with the use of.Cationic polyacrylamide need add in paper pulp before bentonite, and as added before fan pump or pressurized screen, addition is 0.02%-0.1%; Composite modified bentonite particulate added before or after pressurized screen, and addition 0.05%-0.5%(is the mass percent relative to over dry slurry).Compared with traditional bentonite microparticles retention agent, the retention aid and filtering aid performance of this modified alta-mud particulate about improves 12%.
The principle of the inventive method: bentonitic active ingredient is montmorillonite, sodium carbonate, sodium lignosulfonate mix with bentonite, when carrying out extrusion modification in screw extruder, due to sodium ion replace calcium ion montmorillonite layer between substitution effect, sodium lignosulfonate enters the expansion in situ effect between montmorillonite layer, screw extruding shearing machine can extrusion shearing effect, and the synergy of three, improve alta-mud modification effect, reduce the granularity of bentonite microparticles, improve its elecrtonegativity.And when using in paper, due to the synergy of sodium lignosulfonate and bentonite microparticles, further increase the retention and drainage effect of bentonite microparticles.
Embodiment 1:
First, bentonite raw ore mechanical crushing, to 200-600 order, adds sodium carbonate and lignosulphonic acid sodium solution, sodium carbonate addition is 1%, and sodium lignosulfonate addition 0.5%(is relative to bentonitic mass percent), then, adding water and being adjusted to bentonitic mass concentration is 20%, mix, carry out the process of extruding sodium in screw extruder, extruding reaction temperature is 30 DEG C, extrusion time 5 minutes, final drying, pulverizes, obtained lignosulphonates-sodium carbonate composite modified bentonite particulate.
Apply in paper production: lignosulphonates-sodium carbonate composite modified bentonite particulate is diluted with water to 5% mass concentration, then with cationic polyacrylamide with the use of.Cationic polyacrylamide need add in paper pulp before bentonite, and as added before fan pump or pressurized screen, addition is 0.02%; Composite modified bentonite particulate added before or after pressurized screen, and addition 0.5%(is the mass percent relative to over dry slurry).
Embodiment 2:
First, bentonite raw ore mechanical crushing, to 200-600 order, adds sodium carbonate and lignosulphonic acid sodium solution, sodium carbonate addition is 5%, and sodium lignosulfonate addition 5%(is relative to bentonitic mass percent), then, adding water and being adjusted to bentonitic mass concentration is 45%, mix, carry out the process of extruding sodium in screw extruder, extruding reaction temperature is 62 DEG C, extrusion time 35 minutes, final drying, pulverizes, obtained lignosulphonates-sodium carbonate composite modified bentonite particulate.
Apply in paper production: lignosulphonates-sodium carbonate composite modified bentonite particulate is diluted with water to 2.3% mass concentration, then with cationic polyacrylamide with the use of.Cationic polyacrylamide need add in paper pulp before bentonite, and as added before fan pump or pressurized screen, addition is 0.06%; Composite modified bentonite particulate added before or after pressurized screen, and addition 0.37%(is the mass percent relative to over dry slurry).
Embodiment 3:
The inventive method is specifically: first, bentonite raw ore mechanical crushing is to 200-600 order, add sodium carbonate and lignosulphonic acid sodium solution, sodium carbonate addition is 10%, sodium lignosulfonate addition 10%(is relative to bentonitic mass percent), then, adding water and being adjusted to bentonitic mass concentration is 80%, mix, carry out the process of extruding sodium in screw extruder, extruding reaction temperature is 100 DEG C, extrusion time 50 minutes, final drying, pulverizes, obtained lignosulphonates-sodium carbonate composite modified bentonite particulate.
Apply in paper production: lignosulphonates-sodium carbonate composite modified bentonite particulate is diluted with water to 0.1% mass concentration, then with cationic polyacrylamide with the use of.Cationic polyacrylamide need add in paper pulp before bentonite, and as added before fan pump or pressurized screen, addition is 0.1%; Composite modified bentonite particulate added before or after pressurized screen, and addition 0.05%(is the mass percent relative to over dry slurry).
The present invention adopts sodium lignosulfonate, sodium carbonate to carry out the modification of half dry type mechanochemical reaction to bentonite, can improve bentonite electronegativity, improves drying efficiency, reduces production cost.
Claims (2)
1. a preparation method for lignosulphonates-bentonite composite particles retention agent, is characterized in that the method is specifically:
First, add sodium carbonate and lignosulphonic acid sodium solution in bentonite raw ore after being pulverized, sodium carbonate addition is 1%-10%, sodium lignosulfonate addition 0.5%-10%;
Then, adding water and being adjusted to bentonitic mass concentration is 20%-80%, carries out the process of extruding sodium in screw extruder, extruding reaction temperature is 30-100 DEG C, extrusion time 5-50 minute, dry, pulverize rear obtained lignosulphonates-sodium carbonate composite modified bentonite particulate;
In described extruding sodium processing procedure: substitution effect between the montmorillonite layer of sodium ion replacement calcium ion, sodium lignosulfonate enters the expansion in situ effect between montmorillonite layer, the extrusion shearing effect of screw extruding shearing machine energy, and the synergy of three, improve alta-mud modification effect, reduce the granularity of bentonite microparticles, improve its elecrtonegativity.
2. lignosulphonates-the application of bentonite composite particles retention agent in paper production, it is characterized in that: lignosulphonates-sodium carbonate composite modified bentonite particulate is diluted with water to 0.1%-5% mass concentration, then with cationic polyacrylamide with the use of, cationic polyacrylamide added in paper pulp before bentonite, and addition is 0.02%-0.1%; Composite modified bentonite particulate added before or after pressurized screen, addition 0.05%-0.5%.
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| CN201510196310.XA CN104831581B (en) | 2015-04-23 | 2015-04-23 | The preparation method and application of lignosulphonates-bentonite composite particles retention agent |
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| CN201510196310.XA CN104831581B (en) | 2015-04-23 | 2015-04-23 | The preparation method and application of lignosulphonates-bentonite composite particles retention agent |
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| CN104831581A true CN104831581A (en) | 2015-08-12 |
| CN104831581B CN104831581B (en) | 2016-08-24 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012041A (en) * | 2020-07-17 | 2020-12-01 | 浙江理工大学 | Preparation method and application of graphene oxide-bentonite composite particle retention and drainage aid |
| CN112575612A (en) * | 2020-12-09 | 2021-03-30 | 杭州玖圩新材料科技有限公司 | Composite retention aid and preparation method and application thereof |
| CN113321222A (en) * | 2021-05-27 | 2021-08-31 | 建平天正矿业有限公司 | Neutral sodium treatment and decoloration bleaching combined processing technology and application of low-whiteness calcium-based bentonite |
| CN115477932A (en) * | 2021-05-31 | 2022-12-16 | 中国石油天然气集团有限公司 | Composite plugging agent and preparation method thereof |
-
2015
- 2015-04-23 CN CN201510196310.XA patent/CN104831581B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012041A (en) * | 2020-07-17 | 2020-12-01 | 浙江理工大学 | Preparation method and application of graphene oxide-bentonite composite particle retention and drainage aid |
| CN112575612A (en) * | 2020-12-09 | 2021-03-30 | 杭州玖圩新材料科技有限公司 | Composite retention aid and preparation method and application thereof |
| CN112575612B (en) * | 2020-12-09 | 2021-11-26 | 杭州玖圩新材料科技有限公司 | Composite retention aid and preparation method and application thereof |
| CN113321222A (en) * | 2021-05-27 | 2021-08-31 | 建平天正矿业有限公司 | Neutral sodium treatment and decoloration bleaching combined processing technology and application of low-whiteness calcium-based bentonite |
| CN113321222B (en) * | 2021-05-27 | 2023-08-11 | 建平天正矿业有限公司 | Neutral sodium treatment and decoloration bleaching combined processing technology of low-whiteness calcium bentonite and application |
| CN115477932A (en) * | 2021-05-31 | 2022-12-16 | 中国石油天然气集团有限公司 | Composite plugging agent and preparation method thereof |
| CN115477932B (en) * | 2021-05-31 | 2023-09-29 | 中国石油天然气集团有限公司 | Composite plugging agent and preparation method thereof |
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| CN104831581B (en) | 2016-08-24 |
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