CN100532462C - Efficient modifying method for wollastonite powder - Google Patents
Efficient modifying method for wollastonite powder Download PDFInfo
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- CN100532462C CN100532462C CNB2007101392857A CN200710139285A CN100532462C CN 100532462 C CN100532462 C CN 100532462C CN B2007101392857 A CNB2007101392857 A CN B2007101392857A CN 200710139285 A CN200710139285 A CN 200710139285A CN 100532462 C CN100532462 C CN 100532462C
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Abstract
A high-efficient silica grey powder modification method concretely relates to a high-efficient natural silica grey powder modification method using dry powder proportioning. The modified silica grey powder is especially applicable to be used as filler in plastic and paper making industry and the problem to be solved is providing a natural silica grey powder modification method with dry powder proportioning, simple process, high modifying efficiency, convenient operation and low cost. The adopted scheme includes that dry-powder composite A containing silica grey powder and dry-powder composite B containing silica grey powder are respectively prepared, appropriate amount of water is added into a pulp preparation tank, followed by addition and stirring of dry-powder composite A (or dry-powder composite B). After complete dissolution, the prepared dry-powder composite B (or dry-powder composite A) is added in turn with stirring until the slurry is neutral. The invention can be widely used in plastic, rubber, paper-making, coating and paint etc., and has good market application prospect.
Description
Technical field
A kind of modifying method for wollastonite powder efficiently of the present invention is specifically related to a kind of dry powder formulation, natural modifying method for wollastonite powder efficiently, and the wollastonite powder after the modification is particularly suitable for using as a kind of filler in plastics and paper industry.
Background technology
Mineral powder can improve the performance of body material, and be used widely in industries such as plastics, rubber, papermaking, coating and coating owing to cheap.But, make the mineral powder surface have smooth cleavage surface and sharp-pointed corner angle owing to show along cleavage surface cleavage disruptive strong tendency in the mineral crystal crushing process.Smooth cleavage surface makes mineral powder and basal body binding force poor, and sharp-pointed corner angle are again the focal point of stress in the material damage process, easily cause the inefficacy that crackle causes material, have influenced the better performance of mineral powder effect.Therefore how pattern is carried out on the mineral powder surface and modify, the mineral powder of preparation high added value, high-tech content is the difficult point of powder body material engineering area research.
Natural wollastonite breeze hardness is quite high, and has acicular fibrous texture, has its own unique function when using in rubber, plastics and paper industry with respect to other mineral filler.But, bring serious wear problem when plastic industry is used as filler, can for processing mechanical apparatus and mould simultaneously because its crystal is fibrous, and corner angle are more sharp-pointed, and wear(ing)value is bigger; And also can cause serious wearing and tearing to the expensive gauze cloth of copying at paper industry, its addition in joining slurry is restricted greatly.
To the modification of wollastonite, be exactly with wollastonite powder as base matter, utilize modification technology to form other materials of one deck or multiple layer, thereby changed the condition of surface and the structure of former wollastonite powder on its surface, also just changed the performance of former powder.
Surface for natural wollastonite breeze in the traditional method coats, adopt wet processing mostly, need after filtration after the coating, wash, dry, operation such as break up, process is more loaded down with trivial details, length consuming time, the modification breeze after the drying, entering as filler still needs to add water after the paper plant and is mixed with certain density slurry, through progressively joining in the wood pulp cellulose after the dilution.
Summary of the invention
The purpose of this invention is to provide a kind of dry powder formulation, technology is simple, modification efficiency is high, the method for easy to use, natural wollastonite powder modification that cost is low.
In order to address the above problem, the scheme that a kind of modifying method for wollastonite powder efficiently of the present invention adopts is: a kind of modifying method for wollastonite powder efficiently is characterized in that: prepare according to the following steps: the first step, and preparation contains the dry powder mixture first of wollastonite powder; In second step, preparation contains the dry powder mixture second of wollastonite powder; The 3rd step, join slurry, in slurry commanding tank, add an amount of water, add the dry powder mixture first that the first step configures (or second step configured dry powder mixture second) then, through stirring, fully after the dissolving, progressively add the dry powder mixture second that second step configured (or the first step configure dry powder mixture first) again, stirring while adding, is neutral until slurries;
Above-mentioned preparation contains the step of the dry powder mixture first of wollastonite powder: get 500 part of 400～1250 purpose wollastonite powder A, 106～695 parts of solubility carbonate powder E and 8～20 parts of dry powder mixture C, will make behind its thorough mixing then; Preparation contains the step of dry powder mixture second of wollastonite powder: it is solvable and with soluble carbon hydrochlorate E powder F and 2.45～12.25 parts of dry powder mixture D of white precipitate take place to get 500 part of 400～1250 purpose wollastonite powder B, 112～828 parts, will make behind its thorough mixing then; Joining the water that adds in the slurry process is 4000～8000 parts;
The step that above-mentioned preparation contains the dry powder mixture first of wollastonite powder can also be: get 500 part of 400～1250 purpose wollastonite powder A, 106～695 parts of solubility carbonate powder E, 8～20 parts of dry powder mixture C and 2.45～12.25 parts of dry powder mixture D; The step of dry powder mixture second that preparation contains wollastonite powder can also be: it is solvable and react with soluble carbon hydrochlorate E and to generate the powder F of white precipitate to get 500 part of 400～1250 purpose wollastonite powder B and 112～828 parts; Joining the water that adds in the slurry process is 4000～8000 parts;
The step that above-mentioned preparation contains the dry powder mixture first of wollastonite powder can also be: get 500 part of 400～1250 purpose wollastonite powder A and 106～695 parts of solubility carbonate powder E; The step of dry powder mixture second that preparation contains wollastonite powder can also be: it is solvable and react with soluble carbon hydrochlorate E and to generate the powder F of white precipitate to get 500 part of 400～1250 purpose wollastonite powder B, 8～20 parts of dry powder mixture C, 2.45～12.25 parts of dry powder mixture D and 112～828 parts; Joining the water that adds in the slurry process is 4000～8000 parts;
Above-mentioned dry powder mixture C is cationic flocculant and bentonitic powder mixture, and the ratio of its weight is 1:9;
Above-mentioned cationic flocculant is polymerize aluminum chloride or polyamine type cationic flocculant CFAM-30 or quaternary amine type cationic flocculant ST-50 or acrylamide copoly type cationic flocculant M206S-30 or its any mixture;
Above-mentioned dry powder mixture D is the mixture of disodium ethylene diamine tetraacetate and aluminum chloride, and the ratio of its amount of substance is 3:10;
Above-mentioned solubility carbonate powder E is a powdered sodium carbonate, or potassium carbonate powder, or its both mixtures;
Above-mentioned solvable and with the soluble carbon hydrochlorate salt powder F that generates white precipitate that reacts be Calcium Chloride Powder Anhydrous, or anhydrous nitric acid calcium, or Magnesium Chloride Anhydrous, or anhydrous barium chloride, or its any mixture.
The present invention compares with the method for existing wollastonite powder modification has following beneficial effect:
1, dry powder formulation, technology is simple: a kind of modifying method for wollastonite powder efficiently of the present invention utilizes two kinds of dry powder mixture first and dry powder mixture second, under the condition that anhydrous medium exists, do not react, chemical reaction generation carbonate deposition takes place immediately in case there is water to add, with the wollastonite fibre is that attachment point is coated on its surface, to its surface modification in addition.Dry powder after composite successively can be added with order by a certain percentage, when joining slurry, just can realize even coating modification, save filtration, washing, oven dry after the wet method coating, break up, all multiple operation such as classification wollastonite breeze surface.
2, modification efficiency height, cost are low; A kind of modifying method for wollastonite powder efficiently of the present invention makes the wollastonite powder that is coated with carbonate deposition, when the wollastonite powder of the same amount of modification and clad ratio are identical, traditional carborization modified wollastonite powder, need after filtration, washing, oven dry, break up, operations such as classification, making processes needs stable carbon dioxide air source, method provided by the present invention is than traditional method, operation is simple, only need normal temperature and pressure, common equipment can be made, and the modification expense is 3/4ths of a traditional method, and the time is 1/4th to 1/20th of traditional method, the efficient of modification is higher, can make the original ore powder wear(ing)value reduce by 54%～63%.
3, easy to use, simple to operate: that the dry powder after composite is successively added in the entry with order by a certain percentage, when joining slurry, just can realize even coating modification to wollastonite breeze surface, only need stir while adding, be neutral getting final product until slurries, during use, with using with joining, whole process only needs tens minutes, need not substantially to wait for, and is very convenient.
Embodiment
Below in conjunction with specific embodiment a kind of modifying method for wollastonite powder efficiently of the present invention is further described:
Embodiment 1 (the theoretical clad ratio of lime carbonate is 10%)
Elder generation's preparing dry mixture first: get 500g and be processed into 400 purpose Jilin Lishu County wollastonite powder A, adding 107.07g content is 99% industrial sodium carbonate E, add the dry powder mixture C that 8g is made up of cationic flocculant and wilkinite again, cationic flocculant is a polymerize aluminum chloride among the dry powder mixture C, its add-on is 0.8g, wilkinite is 7.2g, and it is all put into stirrer, discharging behind the stirring 3min;
Preparing dry mixture second again: get 500g and be processed into 400 purpose Jilin Lishu County wollastonite powder B, adding 112.12g content is 99% Calcium Chloride Powder Anhydrous F, add the dry powder mixture D that 2.45g is made up of disodium ethylene diamine tetraacetate and aluminum chloride again, the ratio of the amount of substance of disodium ethylene diamine tetraacetate and aluminum chloride is 3:10, it is all put into stirrer, discharging behind the stirring 3min;
Get the water of 4000mL then, then above-mentioned dry powder mixture first is added wherein, fully stir, make abundant dissolving;
At last dry powder mixture second is progressively joined under condition of stirring in the above-mentioned slurry, just obtain the good apparent neutral wollastonite powder slurry of surface modification after fully stirring 10min.
Embodiment 2 (the theoretical clad ratio of lime carbonate is 20%)
Elder generation's preparing dry mixture first: get 500g and be processed into 600 purpose Dulan county wollastonite powder A, adding 214.14g content is 99% industrial sodium carbonate E, add the dry powder mixture C that 12g is made up of cationic flocculant and wilkinite again, wherein cationic flocculant is polyamine type cationic flocculant CFAM-30, its add-on is 1.2g, wilkinite is 10.8g, add the dry powder mixture D that 4.90g is made up of disodium ethylene diamine tetraacetate and aluminum chloride again, the ratio of the amount of substance of disodium ethylene diamine tetraacetate and aluminum chloride is 3:10, it is all put into stirrer, discharging behind the stirring 3min;
Preparing dry mixture second again: get 500g and be processed into 600 purpose Dulan county wollastonite powder B, add 331.31g content and be 99% anhydrous nitric acid calcium F, it is all put into stirrer, stir discharging behind the 3min;
Then, get the water of 5000mL, above-mentioned dry powder mixture first is added wherein, fully stir, make abundant dissolving;
Dry powder mixture second is progressively joined under condition of stirring in the above-mentioned slurry, just obtain the good apparent neutral wollastonite powder slurry of surface modification after fully stirring 10min.
Embodiment 3 (the theoretical clad ratio of magnesiumcarbonate is 30%)
Elder generation's preparing dry mixture first: get 500g and be processed into 800 purpose Jiangxi Xinyu wollastonite powder A, adding 321.21g content is 99% industrial sodium carbonate E, add the dry powder mixture C that 16g is made up of cationic flocculant and wilkinite, wherein cationic flocculant is quaternary amine type cationic flocculant ST-50, its add-on is 1.6g, wilkinite is 14.4g, add the dry powder mixture D that 8.75g is made up of disodium ethylene diamine tetraacetate and aluminum chloride again, the ratio of the amount of substance of disodium ethylene diamine tetraacetate and aluminum chloride is 3:10, it is all put into stirrer, discharging behind the stirring 3min;
Preparing dry mixture second again: get 500g and be processed into 800 purpose Jiangxi Xinyu wollastonite powder B, add 342.71g content and be 99% Magnesium Chloride Anhydrous F, put it in the stirrer, stir discharging behind the 3min;
Then, get the water of 6000mL, above-mentioned dry powder mixture second is added wherein, fully stir, make abundant dissolving;
At last, dry powder mixture first is progressively joined under condition of stirring in the above-mentioned slurry, just obtain the good apparent neutral wollastonite powder slurry of surface modification after fully stirring 10min.
Embodiment 4 (the theoretical clad ratio of barium carbonate is 40%)
Elder generation's preparing dry mixture first: get 500g and be processed into 1250 purpose Yunnan Tengchong County wollastonite powder A, adding 428.28g content is 99% industrial sodium carbonate E, puts it in the stirrer discharging behind the stirring 3min;
Preparing dry mixture second again: get 500g and be processed into 1250 purpose Yunnan Tengchong County wollastonite powder B, adding 426.60g content is 99% anhydrous barium chloride F, add the dry powder mixture D that 4.97g is made up of disodium ethylene diamine tetraacetate and aluminum chloride, the ratio of the amount of substance of disodium ethylene diamine tetraacetate and aluminum chloride is 3:10, add the dry powder mixture C that 20g is made up of cationic flocculant and wilkinite again, wherein cationic flocculant is acrylamide copoly type cationic flocculant M206S-30, its add-on is 2g, wilkinite is 18g, it is all put into stirrer, discharging behind the stirring 3min;
Then, get the water of 7000mL, then above-mentioned dry powder mixture second is added wherein, fully stir, make abundant dissolving;
At last, dry powder mixture first is progressively joined under condition of stirring in the above-mentioned slurry, just obtain the good apparent neutral wollastonite powder slurry of surface modification after fully stirring 10min.
Embodiment 5 (the theoretical clad ratio of lime carbonate is 50%)
Elder generation's preparing dry mixture first: get 500g and be processed into 400 purpose Yunnan Tengchong County wollastonite powder A, adding 696.97g content is 99% industrial magnesium phosphate E, add the dry powder mixture C that 10g is made up of cationic flocculant and wilkinite again, wherein cationic flocculant is the mixture of acrylamide copoly type cationic flocculant M206S-30 and quaternary amine type cationic flocculant ST-50, its add-on respectively is 0.5g, wilkinite is 9g, and it is all put into stirrer, discharging behind the stirring 3min;
Preparing dry mixture second again: get 500g and be processed into 400 purpose Yunnan Tengchong County wollastonite powder B, adding 560.61g content is 99% Calcium Chloride Powder Anhydrous F, add the dry powder mixture D that 12.24g is made up of disodium ethylene diamine tetraacetate and aluminum chloride again, the ratio of the amount of substance of disodium ethylene diamine tetraacetate and aluminum chloride is 3:10, it is all put into stirrer, discharging behind the stirring 3min.
Then, get the water of 8000mL, above-mentioned dry powder mixture second is added wherein, fully stir, make abundant dissolving;
At last, dry powder mixture first is progressively joined under condition of stirring in the above-mentioned slurry, just obtain the good apparent neutral wollastonite powder slurry of surface modification after fully stirring 10min.
Embodiment 6 (the theoretical clad ratio of sedimentary carbonate is 30%)
Elder generation's preparing dry mixture first: get 500g and be processed into 600 purpose Jiangxi Xinyu wollastonite powder A, add 214.14g content and be 99% industrial sodium carbonate E and 139.39g content and be 99% industrial magnesium phosphate E, put it in the stirrer, stir discharging behind the 3min;
Preparing dry mixture second again: get 500g and be processed into 600 purpose Jiangxi Xinyu wollastonite powder B, add 331.31g content and be 99% anhydrous nitric acid calcium F and 106.65g content and be 99% anhydrous barium chloride F, add the dry powder mixture D that 7.35g is made up of disodium ethylene diamine tetraacetate and aluminum chloride, the ratio of the amount of substance of disodium ethylene diamine tetraacetate and aluminum chloride is 3:10, add the dry powder mixture C that 14g is made up of cationic flocculant and wilkinite again, wherein cationic flocculant is the mixture of acrylamide copoly type cationic flocculant M206S-30 and polyamine type cationic flocculant CFAM-30, its add-on respectively is 0.7g, wilkinite is 12.6g, it is all put into stirrer, discharging behind the stirring 3min;
Then, get the water of 5000mL, above-mentioned dry powder mixture first is added wherein, fully stir, make abundant dissolving;
At last, dry powder mixture second is progressively joined under condition of stirring in the above-mentioned slurry, just obtain the good apparent neutral wollastonite powder slurry of surface modification after fully stirring 10min.
Embodiment 7 (the theoretical clad ratio of sedimentary carbonate is 40%)
Elder generation's preparing dry mixture first: get 500g and be processed into 800 purpose Dulan county wollastonite powder A, add 107.07g content and be 99% industrial sodium carbonate E and 418.8g content and be 99% industrial magnesium phosphate E, add the dry powder mixture C that 18g is made up of cationic flocculant and wilkinite again, wherein cationic flocculant is the mixture of acrylamide copoly type cationic flocculant M206S-30, polyamine type cationic flocculant CFAM-30 and polymerize aluminum chloride, its add-on respectively is 0.6g, wilkinite is 16.2g, it is all put into stirrer, discharging behind the stirring 3min;
Preparing dry mixture second again: get 500g and be processed into 800 purpose Dulan county wollastonite powder B, add 114.24g content and be 99% Magnesium Chloride Anhydrous F, 112.12g content and be 99% Calcium Chloride Powder Anhydrous F, 106.65g content and be 99% anhydrous barium chloride F and 165.66g content and be 99% anhydrous nitric acid calcium F, add the dry powder mixture D that 11.66g is made up of disodium ethylene diamine tetraacetate and aluminum chloride again, the ratio of the amount of substance of disodium ethylene diamine tetraacetate and aluminum chloride is 3:10, it is all put into stirrer, discharging behind the stirring 3min;
Then, get the water of 7000mL, above-mentioned dry powder mixture second is added wherein, fully stir, make abundant dissolving;
At last, dry powder mixture first is progressively joined under condition of stirring in the above-mentioned slurry, just obtain the good apparent neutral wollastonite powder slurry of surface modification after fully stirring 10min.
Embodiment 8 (the theoretical clad ratio of sedimentary carbonate is 30%)
Elder generation's preparing dry mixture first: get 500g and be processed into 1000 purpose Jilin Lishu County wollastonite powder A, add 214.14g content and be 99% industrial sodium carbonate E and 139.39g content and be 99% industrial magnesium phosphate E, add the dry powder mixture C that 15g is made up of cationic flocculant and wilkinite again, wherein cationic flocculant is acrylamide copoly type cationic flocculant M206S-30, the mixture of polyamine type cationic flocculant CFAM-30 and quaternary amine type cationic flocculant ST-50, its add-on respectively is 0.5g, wilkinite is 13.5g, it is all put into stirrer, discharging behind the stirring 3min;
Preparing dry mixture second again: get 500g and be processed into 1000 purpose Jilin Lishu County wollastonite powder B, add 213.3g content and be 99% anhydrous barium chloride F and 112.12g content and be 99% Calcium Chloride Powder Anhydrous F, add the dry powder mixture D that 3.73g is made up of disodium ethylene diamine tetraacetate and aluminum chloride again, the ratio of the amount of substance of disodium ethylene diamine tetraacetate and aluminum chloride is 3:10, it is all put into stirrer, discharging behind the stirring 3min;
Then, get the water of 6000mL, above-mentioned dry powder mixture first is added wherein, fully stir, make abundant dissolving;
At last, dry powder mixture second is progressively joined under condition of stirring in the above-mentioned slurry, just obtain the good apparent neutral wollastonite powder slurry of surface modification after fully stirring 10min.
More than stirrer among eight kinds of embodiment be chemical industry powder stirrer commonly used, its model can be SHR series mixing machine, DSH cone-type mixer, the WZL Agravicmixer, the horizontal ribbon mixer of LHY, LDH colter mixing machine etc., whole process is prepared at normal temperatures and pressures and is got final product.
Claims (6)
1. modifying method for wollastonite powder efficiently is characterized in that: prepare according to the following steps:
The first step, preparation contains the dry powder mixture first of wollastonite powder;
In second step, preparation contains the dry powder mixture second of wollastonite powder;
The 3rd step, join slurry, in slurry commanding tank, add an amount of water, add the dry powder mixture first that the first step configures then, through stirring, fully after the dissolving, progressively add the dry powder mixture second that second step configured again, stir while adding, be neutral until slurries;
Wherein, preparation contains the step of the dry powder mixture first of wollastonite powder: get 500 part of 400～1250 purpose wollastonite powder A, 106～695 parts of solubility carbonate powder E and 8～20 parts of dry powder mixture C, will make behind its thorough mixing then;
Preparation contains the step of dry powder mixture second of wollastonite powder: it is solvable and with soluble carbon hydrochlorate E powder F and 2.45～12.25 parts of dry powder mixture D of white precipitate take place to get 500 part of 400～1250 purpose wollastonite powder B, 112～828 parts, will make behind its thorough mixing then;
Joining the water that adds in the slurry process is 4000～8000 parts;
Dry powder mixture C is cationic flocculant and bentonitic powder mixture, and the ratio of its weight is 1:9;
Dry powder mixture D is the mixture of disodium ethylene diamine tetraacetate and aluminum chloride, and the ratio of its amount of substance is 3:10.
2. a kind of modifying method for wollastonite powder efficiently according to claim 1 is characterized in that: above-mentioned preparation contains the step of the dry powder mixture first of wollastonite powder: get 500 part of 400～1250 purpose wollastonite powder A, 106～695 parts of solubility carbonate powder E, 8～20 parts of dry powder mixture C and 2.45～12.25 parts of dry powder mixture D;
Preparation contains the step of dry powder mixture second of wollastonite powder: it is solvable and react with soluble carbon hydrochlorate E and to generate the powder F of white precipitate to get 500 part of 400～1250 purpose wollastonite powder B and 112～828 parts;
Joining the water that adds in the slurry process is 4000～8000 parts.
3. a kind of modifying method for wollastonite powder efficiently according to claim 1 is characterized in that: above-mentioned preparation contains the step of the dry powder mixture first of wollastonite powder: get 500 part of 400～1250 purpose wollastonite powder A and 106～695 parts of solubility carbonate powder E;
Preparation contains the step of dry powder mixture second of wollastonite powder: it is solvable and react with soluble carbon hydrochlorate E and to generate the powder F of white precipitate to get 500 part of 400～1250 purpose wollastonite powder B, 8～20 parts of dry powder mixture C, 2.45～12.25 parts of dry powder mixture D and 112～828 parts;
Joining the water that adds in the slurry process is 4000～8000 parts.
4. according to any described a kind of modifying method for wollastonite powder efficiently in the claim 1～3, it is characterized in that: cationic flocculant is a polymerize aluminum chloride.
5. according to any described a kind of modifying method for wollastonite powder efficiently in the claim 1～3, it is characterized in that: solubility carbonate powder E is a powdered sodium carbonate, or potassium carbonate powder, or its both mixtures.
6. according to any described a kind of modifying method for wollastonite powder efficiently in the claim 1～3, it is characterized in that: solvable and with the soluble carbon hydrochlorate E powder F that generates white precipitate that reacts be Calcium Chloride Powder Anhydrous, or anhydrous nitric acid calcium, or Magnesium Chloride Anhydrous, or anhydrous barium chloride, or its any mixture.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745909A (en) * | 2012-07-13 | 2012-10-24 | 山西泰华工贸有限公司 | Low-wear wollastonite mineral fiber for paper making |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101280071B (en) * | 2008-05-28 | 2010-11-10 | 太原泰特新型矿纤材料有限公司 | Continuous modification method for grammite for plastic |
| CN106192557B (en) * | 2016-06-29 | 2018-07-24 | 浙江品创知识产权服务有限公司 | A kind of preparation method of wallpaper modified wollastonite powder |
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| 硅灰石改性研究. 康文，周春为，葛金龙.东华理工学院学报，第29卷第2期. 2006 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102745909A (en) * | 2012-07-13 | 2012-10-24 | 山西泰华工贸有限公司 | Low-wear wollastonite mineral fiber for paper making |
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