CN102070188A - Method for preparing difficult-to-harden potassium titanate with low hygroscopicity and high bulk density - Google Patents
Method for preparing difficult-to-harden potassium titanate with low hygroscopicity and high bulk density Download PDFInfo
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- CN102070188A CN102070188A CN 201010579739 CN201010579739A CN102070188A CN 102070188 A CN102070188 A CN 102070188A CN 201010579739 CN201010579739 CN 201010579739 CN 201010579739 A CN201010579739 A CN 201010579739A CN 102070188 A CN102070188 A CN 102070188A
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Abstract
The invention discloses a method for preparing difficult-to-harden potassium titanate with low hygroscopicity and high bulk density. The method is mainly characterized in that: a titanium source is compounded with a potassium source under calcination condition by auxiliary agents and the like, so that the surface condition and structure of the product potassium titanate are improved, and the product potassium titanate is difficult to harden, has the low hygroscopicity, the high bulk density, high flowability and high dispersibility and is particularly suitable for producing flux cored wires.
Description
Technical field
The present invention relates to the potassium titanate powders, particularly flux-cored wire of welding material, friction materials, lubricant, strongthener, heat-resisting and usefulness such as lagging material, coating and paper additive preparation method, belong to field of inorganic materials with potassium titanate.
Background technology
Alkali metal titanate all is a kind of apparent alkalescence, the powder body material that water absorbability is very strong, if potassium titanate particularly improper packing or improper storage, will cause the raw material moisture absorption that is exceedingly fast, some alkali metal titanate also can produce the phenomenon that seriously hardens simultaneously, not only because moisture absorption, hardening causes powder dispersity, mobile variation, use properties descends, and because the change of actual volume, feed distribution inhomogeneous causes the decline of application performance.In addition, in flux-cored wire was produced, except the size of alkali metal titanate, the size of its tap density also was one of factor that influences the welding wire quality product.Under the situation of same particle size, wish that alkali metal titanate has bigger tap density, so both helped the perfusion of medicine core material, again can be so that the amount of alkali metal titanate is relatively large in the core wire unit volume.Therefore, present technique is primarily aimed at above-described several problem exactly and carries out the work, and obtains a kind ofly to be difficult for moisture absorption, not harden, and tap density is big, the manufacture method of the alkali metal titanate of dispersed, good fluidity.
Summary of the invention
Emphasis of the present invention solves the surface tissue and the activity thereof of potassium titanate powder, and the heaviness of powder, makes it be difficult for moisture absorption, even a small amount of moisture absorption can not cause powder to harden yet, influences use properties; By the processing of heaviness, can reduce the firing temperature of potassium titanate on the one hand, solution high temperature burns till and expends the energy, and the too high problem of powder granule hardness, can make powder have good tap density on the other hand again, and is mobile all good with dispersiveness.The key of problem just is no matter surface treatment still is the heaviness processing, at first all can not influence the application performance of potassium titanate, promptly reduce arc voltage, stable arc, minimizing and splash, weld seam is fine and closely woven, secondly can not introduce to welding and the deleterious material of welding object, as sulphur, phosphorus etc.
The proportioning in titanium source and potassium source is calculated according to variant production.Adopt potassium titanate or sodium titanate fully, calculate according to titanium potassium or titanium sodium molar fraction; The potassium titanate that is used for flux-cored wire, according to hyperkalemia hyponatremia, or the massfraction proportioning of the low potassium of high sodium is calculated the consumption in titanium source, potassium source or sodium source.
The auxiliary agent of preparation potassium titanate powder comprises heaviness auxiliary agent and finishing auxiliary agent, can be one or more mixtures in vitriolate of tartar, saltpetre, Repone K, sodium-chlor, boric acid, borax, boron trichloride, boron oxide, potassium silicate, water glass, silicon-dioxide, white carbon black, gac, carboxymethyl cellulose, stearic acid, calcium stearate, potassium molybdate, Sodium orthomolybdate, ammonium molybdate, aluminum oxide, zinc oxide, the magnesium oxide etc.The volume of auxiliary agent is 1～15% of a total mass, as if adjuvant used potassium or the sodium of containing, answers the consumption in corresponding deduction main potassium source or main sodium source during charge calculation.
Raw and auxiliary materials such as auxiliary agent and titanium source, potassium source add in the ball grinder in the lump, carry out batch mixing and grinding simultaneously.Firing temperature is adding assistant more not, but low 200～300 ℃ of the temperature will reach big tap density the time generally is no more than 950 ℃.
Calciner can adopt box-type furnace, pit furnace, tunnel furnace or rotary kiln, and the high-temperature zone residence time is not less than 1h.
Embodiment
Embodiment 1:
With rutile-type ilmenite powder and Anhydrous potassium carbonate according to TiO
2: K
2The molar fraction of O=2.9 is weighed, and the addition of auxiliary agent boric acid and silicon-dioxide is 3% of a total amount, adds together in the ball grinder, adds a certain amount of agate piece, ball milling 2h; The batch mixing box alms bowl of packing into, 900 ℃ box-type furnace calcining 2h; Naturally be cooled to about 400 ℃, the cooling of coming out of the stove.Respectively through broken, the packing of pulverizing, sieve, weigh.
Embodiment 2:
With rutile-type ilmenite powder and Anhydrous potassium carbonate, anhydrous sodium carbonate according to TiO in the product
2Massfraction is 77%, Na
2O massfraction 13%, K
2O massfraction 7% calculates weighs.Gac, two kinds of additive dosages of silicon-dioxide respectively are 3% of total amount, add ball grinder together, add a certain amount of agate piece, ball milling 2h; The batch mixing box alms bowl of packing into adopts the tunnel furnace calcining, and 900 ℃ the high-temperature zone residence time is not less than 1h; Progressively cool off through cooling section, more respectively through broken, the packing of pulverizing, sieve, weigh.
Embodiment 3:
With rutile-type ilmenite powder and anhydrous sodium carbonate, Anhydrous potassium carbonate according to TiO in the product
2Massfraction is 73%, K
2O massfraction 16%, Na
2O massfraction 5% calculates weighs.Two kinds of additive dosages of boric acid and silicon-dioxide respectively are 3% of total amount, and the volume of gac is 7%, adds ball grinder together, add a certain amount of agate piece, ball milling 2h; The batch mixing box alms bowl of packing into adopts the pit furnace calcining, and 900 ℃ the high-temperature zone residence time is not less than 1.5h; Through progressively cooling, more respectively through broken, the packing of pulverizing, sieve, weigh.
Claims (6)
1. one kind is difficult for moisture absorption, hardens, the potassium titanate manufacture method that tap density is big, and its feature comprises: titanium source and potassium source cooperate by auxiliary agent and calcination condition etc., improve the surface appearance and the structure of product potassium titanate, make it be difficult for moisture absorption and harden, tap density is big, flowability and good dispersity.
2. the titanium source of preparation potassium titanate can be the titanium dioxide (rutile-type, Detitanium-ore-type, brookite type) of various models or one or more mixtures in rutile-type concentrated ilmenite, the titanium slag etc.
3. the potassium source of preparation potassium titanate is meant one or more mixtures of Anhydrous potassium carbonate, Carbon Dioxide hydrogen potassium, vitriolate of tartar, saltpetre, potassium hydroxide etc.
4. the auxiliary agent of preparation potassium titanate comprises heaviness auxiliary agent and finishing auxiliary agent, can be one or more mixtures in vitriolate of tartar, saltpetre, Repone K, sodium-chlor, boric acid, borax, boron trichloride, potassium silicate, water glass, silicon-dioxide, white carbon black, gac, carboxymethyl cellulose, stearic acid, calcium stearate, potassium molybdate, Sodium orthomolybdate, molybdic acid money, aluminum oxide, zinc oxide, the magnesium oxide etc.
5. the volume of auxiliary agent is 1～15% of a total mass.
6. the potassium titanate of any one in 1 of claim, 2,3,4, it comprises other alkali metal component that contains except that K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010579739 CN102070188A (en) | 2010-12-09 | 2010-12-09 | Method for preparing difficult-to-harden potassium titanate with low hygroscopicity and high bulk density |
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| CN 201010579739 CN102070188A (en) | 2010-12-09 | 2010-12-09 | Method for preparing difficult-to-harden potassium titanate with low hygroscopicity and high bulk density |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677143A (en) * | 2012-06-11 | 2012-09-19 | 江南大学 | Method for promoting growth of potassium titanate crystal whisker |
| CN104894636A (en) * | 2015-04-29 | 2015-09-09 | 华东理工大学 | Preparation method of potassium octatitanate whisker |
| CN105033506A (en) * | 2015-08-24 | 2015-11-11 | 句容亿格纳米材料厂 | Potassium titanate welding rod additive and preparation method thereof |
| CN113264551A (en) * | 2021-05-19 | 2021-08-17 | 句容亿格纳米材料厂 | Preparation method of potassium titanate and application of potassium titanate in welding electrode |
| CN114890462A (en) * | 2022-05-17 | 2022-08-12 | 张家港大塚化学有限公司 | Preparation method of columnar potassium hexatitanate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093760A (en) * | 1993-04-10 | 1994-10-19 | 中国科学院金属研究所 | Potassium titanate crystal whiskers preparation method |
| CN101694009A (en) * | 2009-10-01 | 2010-04-14 | 中钢集团洛阳耐火材料研究院有限公司 | Method for auxiliary synthesis of potassium titanate crystal whisker by using high-energy ball mill method |
-
2010
- 2010-12-09 CN CN 201010579739 patent/CN102070188A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093760A (en) * | 1993-04-10 | 1994-10-19 | 中国科学院金属研究所 | Potassium titanate crystal whiskers preparation method |
| CN101694009A (en) * | 2009-10-01 | 2010-04-14 | 中钢集团洛阳耐火材料研究院有限公司 | Method for auxiliary synthesis of potassium titanate crystal whisker by using high-energy ball mill method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677143A (en) * | 2012-06-11 | 2012-09-19 | 江南大学 | Method for promoting growth of potassium titanate crystal whisker |
| CN104894636A (en) * | 2015-04-29 | 2015-09-09 | 华东理工大学 | Preparation method of potassium octatitanate whisker |
| CN104894636B (en) * | 2015-04-29 | 2017-10-27 | 华东理工大学 | The preparation method of eight potassium titanate crystal whiskers |
| CN105033506A (en) * | 2015-08-24 | 2015-11-11 | 句容亿格纳米材料厂 | Potassium titanate welding rod additive and preparation method thereof |
| CN113264551A (en) * | 2021-05-19 | 2021-08-17 | 句容亿格纳米材料厂 | Preparation method of potassium titanate and application of potassium titanate in welding electrode |
| CN114890462A (en) * | 2022-05-17 | 2022-08-12 | 张家港大塚化学有限公司 | Preparation method of columnar potassium hexatitanate |
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Application publication date: 20110525 |