【発明の詳細な説明】本発明はｓｊ！Ｊ鉄の工程で副次的に生成されるキッシ
ュ黒鉛の精製法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides sj! The present invention relates to a method for refining quiche graphite, which is produced as a by-product in the J iron process.
上記キッシュ黒鉛は結晶化の十分進行した良質の黒鉛で
、摩擦係数の小さい特徴をもっている０しかしながらキッシュ黒鉛には製鉄におけるダスラグ＾付着しており、また不純物として数ハ＋−セン
トの鉄やシリコンを含んでいる。The above-mentioned Quiche graphite is a high-quality graphite that has undergone sufficient crystallization and has a small coefficient of friction.However, Quiche graphite has dust lag ^ adhering to it during iron manufacturing, and it also contains several cents of iron and silicon as impurities. Contains.
本発明はこのようなキッシュ黒鉛を高純度に精製する方
法を提供しようとするものである。The present invention aims to provide a method for refining such quiche graphite to high purity.
すなわちキッシュ黒鉛に王水を加えて加熱して粗精製し
、次いでフッ化水素酸と硝酸の混液を加えて加熱し、水
洗、乾燥を行なうことにより、高純度で結晶性のよい黒
鉛を得ることができる。That is, by adding aqua regia to quiche graphite and heating it to roughly purify it, then adding a mixture of hydrofluoric acid and nitric acid, heating it, washing with water, and drying, you can obtain graphite with high purity and good crystallinity. I can do it.
実施例不純物としてシリコン０．８重量パーセント、カルシウ
ム０．０２重量パーセント、マグネシウム０．０１重鴛
バーセント、鉄４．８重量パーセント。Example impurities include 0.8% by weight of silicon, 0.02% by weight of calcium, 0.01% by weight of magnesium, and 4.8% by weight of iron.
アルミニウム０．０３重量パーセントを含むキッシュ黒
鉛２００２に王水４００ Ｑ−を加えて攪拌し、２００
℃に加熱したホットプレート上で６時間加熱した。次い
でキッシュ黒鉛をろ別し、水洗した。Aqua regia 400 Q- was added to Quiche graphite 2002 containing 0.03 weight percent of aluminum and stirred.
It was heated for 6 hours on a hot plate heated to ℃. Then, the quiche graphite was filtered out and washed with water.
さらに４８チフツ化水素酸１５０ＣＣと濃硝酸１５０ｃ
ｃの等量混液に王水処理したキッシュ黒鉛を加えて攪拌
し、王水処理と同様に３時間加熱後ろ別し、水洗、乾燥
を行なった。In addition, 150cc of 48hydrothihydric acid and 150cc of concentrated nitric acid.
Quiche graphite treated with aqua regia was added to a mixture of equal amounts of c and stirred, heated for 3 hours in the same manner as the aqua regia treatment, separated, washed with water, and dried.
得られた精製キッシュ黒鉛は、不純物として鉄ハｏ、ｏ
＋ ｘｉバーセント以下でシリコン、カルシウム、マグ
ネシウム、アルミニウムは検出すれず、高純度なもので
めった。The obtained purified quiche graphite contains iron hao, o as impurities.
Silicon, calcium, magnesium, and aluminum were not detected below +xi percent, and were rarely detected with high purity.
また精製キッシュ黒鉛およびその他の天然黒鉛、人造黒
鉛についてモリブデンの特性エックス線を用いてｃ ０
０２ ）面の回折図形をと９、半価幅を測定して結晶性
を比較して次の結果を得た０本発明方法による精製キッシュ黒鉛は純度が高く、また
半価幅が小きくで結晶性が良好であることが確認された
。In addition, for refined Quisch graphite, other natural graphites, and artificial graphite, c0
02) The diffraction pattern of the surface was measured and the half width was compared to compare the crystallinity, and the following results were obtained. It was confirmed that the crystallinity was good.
出願人 株式会社 小松製作所代理人弁理士米原正章弁理士浜本 忠Applicant: Komatsu Ltd.Representative Patent Attorney Masaaki YoneharaPatent Attorney Tadashi Hamamoto
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57167543AJPS5957906A (en) | 1982-09-28 | 1982-09-28 | Method for purifying kish graphite |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57167543AJPS5957906A (en) | 1982-09-28 | 1982-09-28 | Method for purifying kish graphite |
| Publication Number | Publication Date |
|---|---|
| JPS5957906Atrue JPS5957906A (en) | 1984-04-03 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57167543APendingJPS5957906A (en) | 1982-09-28 | 1982-09-28 | Method for purifying kish graphite |
| Country | Link |
|---|---|
| JP (1) | JPS5957906A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4982725A (en)* | 1989-07-04 | 1991-01-08 | Olympus Optical Co., Ltd. | Endoscope apparatus |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4982725A (en)* | 1989-07-04 | 1991-01-08 | Olympus Optical Co., Ltd. | Endoscope apparatus |
| Publication | Publication Date | Title |
|---|---|---|
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