JPH057324B2 - - Google Patents
Info
- Publication number
- JPH057324B2 JPH057324B2 JP62313086A JP31308687A JPH057324B2 JP H057324 B2 JPH057324 B2 JP H057324B2 JP 62313086 A JP62313086 A JP 62313086A JP 31308687 A JP31308687 A JP 31308687A JP H057324 B2 JPH057324 B2 JP H057324B2
- Authority
- JP
- Japan
- Prior art keywords
- diatomaceous earth
- phosphoric acid
- weight
- iron
- contained
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 31
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 30
- 239000005909 Kieselgur Substances 0.000 claims description 28
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 239000012535 impurity Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims 2
- 239000000945 filler Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- -1 alkaline earth metal salt Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000006103 coloring component Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Catalysts (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
- Paper (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Silicon Compounds (AREA)
Description
〔産業上の利用分野〕
この発明は、濾過助剤、触媒担体、紙用フイラ
ー、プラステイツク用フイラー、塗料用フイラー
等に用いられる珪藻土に関する。
〔従来の技術〕
珪藻土は、SiO2を主成分とする鉱物であつて、
純度の高いものはほぼ白色であるが、始どの珪藻
土は、勇気物や鉄その他の無機物を不純物として
含有するため、原鉱は黄色あるいは灰色であるこ
とが多い。この着色した不純物を含有する珪藻土
を、珪藻土の特徴の一つである珪藻殻を利用して
濾過助剤、触媒担体などとして用いる場合、或い
は充填剤として、紙、プラステイツク、塗料等に
使用する場合には、原鉱から水分を除き、有機物
分解して除くために焼成する必要がある。着色し
た珪藻土原鉱を焼成すると、不純物として含まれ
ている鉄分が酸化されてヘマタイトとなり赤色に
なる。赤色に着色した珪藻土は充槙剤としては適
しないし、可溶性の鉄分やその他の無機物を含有
したまゝの珪藻土は濾過助剤、触媒担体としては
好ましくない。
そこで、不純物を含む珪藻土原鉱に、原鉱100
重量部に対して10〜15重量部のソーダ灰等のアル
カリあるいはアルカリ土類金属塩を添加して焼成
し、有機物を分解して除去すると共に、鉄等の発
色成分を添加したアルカリあるいはアルカリ土類
金属塩によつて生ぜしめたガラス中に溶かし込む
ことのによつて、白色の珪藻土を製造することが
行なわれている。
しかしこの従来方法では、白さが今ひとつ不充
分であるし、濾過助剤、触媒担体として使用する
場合には、原鉱中の鉄分等の無機不純物の含有量
が多いと添加したアルカリあるいはアルカリ土類
金属塩によつて、珪藻殻まで熔融してガラス化し
珪藻殻を残したまま白色化することが困難となる
場合があつた。
〔発明が解決しようとする問題点〕
本発明は、従来よりも白い白色珪藻土及び上記
の従来方法に依るよりも白く、又珪藻殻を残した
まま白色化できる珪藻土の製造方法を提供するこ
とにある。
〔問題点を解決するための手段〕
本発明の上記の問題点を解決するための手段
は、鉄、その他の無機物からなる不純物と、該不
純物として含まれた鉄をFe2O3として換算した重
量の５倍以上の重量の燐酸（H3PO4100％とし
て）とを含み、前記不純物が珪藻土の一部と前記
燐酸とによつて生じたガラス中に含有せしめられ
ている白色珪藻土、及び着色した珪藻土原鉱に、
該珪藻土に含有されている鉄をFe2O3として換算
した重量の５倍以上の重量の燐酸（H3PO4100％
として）と、該燐酸の重量の４倍以下の重量の水
とを添加して混合し、該混合物を650℃以上の温
度で焼成する白色珪藻土の製造方法にある。
〔作用〕
着色した不純物を含有する珪藻土を焼成する
と、水分は蒸発し、有機物は分解して揮発するこ
とによつて除去できる。鉄、その他の無機物は、
酸化することなく燐酸と珪藻土の一部と共に、水
あるいは各種溶剤に不溶のガラスを形成し、無色
となり白色の珪藻土が得られる。
燐酸（H3PO4として）の量が、原鉱珪藻土の
中に含まれている鉄分をFe2O3として換算した重
量の５倍未満では、鉄分の少ないものでも焼成し
た珪藻土に赤味が残るので５倍以上添加する必要
がある。
燐酸を原鉱に添加するとき、燐酸と原鉱との混
合をよくするために、燐酸をなるべく多量の水に
[Industrial Application Field] This invention relates to diatomaceous earth used for filter aids, catalyst carriers, paper fillers, plastic fillers, paint fillers, and the like. [Prior art] Diatomaceous earth is a mineral whose main component is SiO 2 .
Highly pure diatomaceous earth is almost white in color, but since diatomaceous earth contains impurities such as iron and other inorganic substances, the raw ore is often yellow or gray in color. When diatomaceous earth containing colored impurities is used as a filter aid, catalyst carrier, etc. by utilizing the diatomaceous shell, which is one of the characteristics of diatomaceous earth, or when it is used as a filler in paper, plastic, paint, etc. In order to remove moisture from raw ore, it is necessary to burn it to decompose and remove organic matter. When colored diatomaceous earth ore is fired, the iron contained as an impurity is oxidized and turns into hematite, which turns red. Red-colored diatomaceous earth is not suitable as a filler, and diatomaceous earth that still contains soluble iron and other inorganic substances is not preferred as a filter aid or catalyst carrier. Therefore, 100% of the raw ore was added to the diatomaceous earth ore containing impurities.
10 to 15 parts by weight of an alkali or alkaline earth metal salt such as soda ash is added and fired to decompose and remove organic matter, and an alkali or alkaline earth is added with a coloring component such as iron. White diatomaceous earth has been produced by dissolving it in glass formed by metallic salts. However, with this conventional method, the whiteness is still insufficient, and when the ore is used as a filter aid or catalyst carrier, it is necessary to add alkali or alkaline soil if the raw ore has a high content of inorganic impurities such as iron. Due to similar metal salts, it was sometimes difficult to melt and vitrify the diatom shells and whiten them while leaving the diatom shells. [Problems to be Solved by the Invention] The present invention provides a method for producing white diatomaceous earth that is whiter than before, and a method for producing diatomaceous earth that is whiter than the above-mentioned conventional method and can be whitened while leaving the diatomaceous shell. be. [Means for Solving the Problems] Means for solving the above problems of the present invention include impurities made of iron and other inorganic substances, and the iron contained as the impurities converted into Fe 2 O 3 . White diatomaceous earth containing at least five times its weight of phosphoric acid (as 100% H 3 PO 4 ), and the impurity is contained in the glass formed by a part of diatomaceous earth and the phosphoric acid, and Colored diatomaceous earth ore,
Phosphoric acid (H 3 PO 4 100 %
phosphoric acid) and water in an amount not more than four times the weight of the phosphoric acid, and the mixture is calcined at a temperature of 650° C. or higher. [Function] When diatomaceous earth containing colored impurities is fired, water evaporates and organic matter can be removed by decomposition and volatilization. Iron and other inorganic materials are
It forms a glass that is insoluble in water or various solvents together with phosphoric acid and a portion of diatomaceous earth without oxidizing, and becomes colorless to obtain white diatomaceous earth. If the amount of phosphoric acid (as H 3 PO 4 ) is less than 5 times the weight of the iron contained in the raw diatomaceous earth converted into Fe 2 O 3 , the calcined diatomaceous earth will have a reddish tinge even if the iron content is low. Since it remains, it is necessary to add 5 times more. When adding phosphoric acid to raw ore, in order to improve the mixing of phosphoric acid and raw ore, add phosphoric acid to as much water as possible.
【表】【table】
本発明によれば従来よりも白さにおいて優れた
商品価値の高い珪藻土を得ることができ、実施例
に示したように、鉄分の多い珪藻土原鉱からでも
珪藻殻を有する白色珪藻土を得ることができる。
According to the present invention, it is possible to obtain diatomaceous earth that is superior in whiteness and has a high commercial value compared to conventional ones, and as shown in the examples, it is possible to obtain white diatomaceous earth having diatomite shells even from diatomite raw ore with a high iron content. can.
Claims (1)
純物として含まれた鉄をFe2O3として換算した重
量の５倍以上の重量の燐酸（H3PO4100％とし
て）とを含み、前記不純物が珪藻土の一部と前記
燐酸とによつて生じたガラス中に含有せしめられ
ている白色珪藻土。 ２ 着色した珪藻土原鉱に、該珪藻土に含有され
ている鉄をFe2O3として換算した重量の５倍以上
の重量の燐酸（H3PO4100％として）と、該燐酸
の重量の４倍以下の重量の水とを添加して、混合
し、該混合物を650℃以上の温度で焼成する白色
珪藻土の製造方法。 ３ 燐酸の添加量が５〜75重量倍であり、焼成温
度が650〜1350℃である特許請求の範囲２項に記
載の白色珪藻土の製造方法。[Scope of Claims] 1. Impurities consisting of iron and other inorganic substances, and phosphoric acid (as 100% H 3 PO 4 ) that is 5 times or more the weight of the iron contained as the impurity calculated as Fe 2 O 3 White diatomaceous earth, wherein the impurity is contained in a glass formed by a part of diatomaceous earth and the phosphoric acid. 2 Add phosphoric acid (as 100% H 3 PO 4 ) of 5 times or more the weight of the iron contained in the diatomaceous earth as Fe 2 O 3 to the colored diatomaceous earth ore, and 4 times the weight of the phosphoric acid (as 100% H 3 PO 4 ). A method for producing white diatomaceous earth, which comprises adding water in an amount equal to or less than twice the weight, mixing the mixture, and firing the mixture at a temperature of 650°C or higher. 3. The method for producing white diatomaceous earth according to claim 2, wherein the amount of phosphoric acid added is 5 to 75 times the weight, and the firing temperature is 650 to 1350°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62313086A JPH01153564A (en) | 1987-12-10 | 1987-12-10 | White diatomaceous earth and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62313086A JPH01153564A (en) | 1987-12-10 | 1987-12-10 | White diatomaceous earth and production thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01153564A JPH01153564A (en) | 1989-06-15 |
| JPH057324B2 true JPH057324B2 (en) | 1993-01-28 |
Family
ID=18037012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62313086A Granted JPH01153564A (en) | 1987-12-10 | 1987-12-10 | White diatomaceous earth and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01153564A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5656568A (en) * | 1995-08-11 | 1997-08-12 | Advanced Minerals Corporation | Highly purified biogenic silica product |
| JP4684676B2 (en) * | 2005-02-16 | 2011-05-18 | 日本植生株式会社 | Line powder, drawing method using the same, and line erasing method |
| CN105712357A (en) | 2008-09-26 | 2016-06-29 | 英默里斯筛选矿物公司 | Diatomaceous earth products containing reduced soluble metal levels, preparation method thereof and methods of using the same |
| US9834684B2 (en) | 2009-03-11 | 2017-12-05 | Imerys Filtration Minerals, Inc. | Natural amorphous silica filler products |
| JP5688946B2 (en) * | 2010-05-20 | 2015-03-25 | 太平洋セメント株式会社 | Method for producing high purity silica |
| KR101178944B1 (en) * | 2010-08-19 | 2012-08-31 | (주)엠씨에이샌드 | Clay composition not hardened continuously and its preparation method |
-
1987
- 1987-12-10 JP JP62313086A patent/JPH01153564A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01153564A (en) | 1989-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1305121A (en) | ||
| US2701240A (en) | Diatomaceous earth product and method for its manufacture | |
| US2758090A (en) | Stabilization of ferrates | |
| ES8207208A1 (en) | Iron-blue pigment, process for preparing it and its use. | |
| IE52048B1 (en) | Process for producing metal silicates from solutions of alkali metal silicates and use thereof in glass making | |
| JPH057324B2 (en) | ||
| ES2105951A1 (en) | Controlledly permeable/cristobalite-free diatomaceous filtering agents | |
| US3898092A (en) | Method for reducing acid lead solubility of a lead-containing glaze or frit | |
| GB1192043A (en) | A Process for the Purification of Sodium Aluminate Liquors | |
| US3640739A (en) | High alumina refractories | |
| US3539371A (en) | Ceramic pigments produced with the aid of peroxy compounds | |
| KR100217929B1 (en) | Process for preparing crayons | |
| JP2994045B2 (en) | Method for producing barium-containing inorganic solid composition, composition of this kind, additive for producing ceramics and ceramics | |
| US3058838A (en) | Pigments | |
| EP1314762B1 (en) | Method for obtaining dyes for ceramic and glass, particularly for substrates and coatings, and dyes obtained thereby | |
| KR880006136A (en) | Process for preparing precursor composition of colored glass composition | |
| US2889232A (en) | Zirconium oxide containing product and method of producing same | |
| EP0010274A2 (en) | Ecological use of spent aqueous cobalt-manganese acetate catalyst solutions | |
| DE2807090C2 (en) | ||
| US3829389A (en) | Process for preparing calcium nitrate and phosphoric acid solutions free from solid particles in suspension | |
| US2759844A (en) | Ultramarine pigment and method of making same | |
| US4430313A (en) | Shipping black phosphoric acid | |
| SU1546444A1 (en) | Enamel for steel | |
| SU149409A1 (en) | The method of producing sodium and potassium chromates | |
| US3080248A (en) | Corrosion inhibitive pigment and method of making same |