Kaolin, mchere wosakhala wachitsulo, ndi mtundu wa dongo ndi miyala yadongo yomwe imapangidwa makamaka ndi mchere wadongo wa gulu la kaolinite. Chifukwa cha mawonekedwe ake oyera komanso ofewa, imadziwikanso kuti nthaka ya Baiyun. Zigawo zazikulu ndi aluminiyamu trioxide ndi silicon dioxide.

Kaolin yake yoyera ndi yoyera, yofewa, komanso yofewa, yokhala ndi mphamvu zabwino zakuthupi komanso zamakemikolo monga pulasitiki komanso kukana moto. Kapangidwe kake ka mchere kamakhala ndi kaolinite, halloysite, hydromica, illite, montmorillonite, komanso mchere monga quartz ndi feldspar.

Makhalidwe a ndondomeko:

1. Kuwala Koyera – Kuyera ndi chimodzi mwa zinthu zazikulu zomwe zimapangitsa kuti kaolin igwire bwino ntchito, ndipo kaolin yoyera kwambiri ndi yoyera. Kuyera kwa kaolin kumagawidwa m'mitundu yoyera yachilengedwe ndi yoyera yokhala ndi calcium. Pazinthu zopangira zadothi, kuyera pambuyo pa calcination ndikofunikira kwambiri, ndipo kuyera kwa calcium kukakhala kwakukulu, kumakhala bwino kwambiri.

2. Kugawa kwa tinthu tating'onoting'ono – Kugawa kwa tinthu tating'onoting'ono kumatanthauza kuchuluka (komwe kumafotokozedwa mu kuchuluka kwa tinthu tating'onoting'ono) mu kaolin yachilengedwe mkati mwa mitundu yosiyanasiyana ya tinthu tating'onoting'ono (komwe kumafotokozedwa mu mamilimita kapena ma micrometer mesh). Dipatimenti iliyonse yamafakitale ili ndi zofunikira zenizeni za kukula kwa tinthu tating'onoting'ono ndi kusalala kwa kaolin pazifukwa zosiyanasiyana. United States imafuna kuti kaolin yogwiritsidwa ntchito ngati chophimba ikhale ndi zinthu zosakwana 2 μ m (6250 mesh), zomwe zimakhala 90-95%, ndipo zodzaza mapepala zokhala ndi zinthu zosakwana 2 μ m zimakhala 78-80%. Pa njira zopangira zinthu zomwe zimafuna kuponya mwachangu, kuthamanga kwa grouting mwachangu, komanso kuthamanga kwa madzi m'thupi, ndikofunikira kuwonjezera kukula kwa tinthu tating'onoting'ono ta zosakaniza.

3. Kuyimitsa: Kuyimitsa ndi kufalikira kumatanthauza makhalidwe a kaolin omwe ndi ovuta kuwameza akamwazika m'madzi. Amadziwikanso kuti anti flocculation. Tinthu tating'onoting'ono tikakhala tating'ono, kuimitsidwa kumakhala bwino. Kaolin yomwe imagwiritsidwa ntchito mumakampani opanga enamel imafuna makhalidwe abwino oyimitsa. Kugwira ntchito kwa kuyimitsa kwa chitsanzo chomwazika m'madzi nthawi zambiri kumatsimikiziridwa ndi kuchuluka kwake kokhazikika pakapita nthawi inayake.

4. Kuteteza magetsi: Kaolin yapamwamba kwambiri ili ndi mphamvu zabwino zotetezera magetsi, zomwe zingagwiritsidwe ntchito popanga ziwiya zadothi zothamanga kwambiri komanso ziwiya zadothi zopanda waya. Mlingo wa mphamvu zotetezera magetsi ukhoza kuyezedwa ndi mphamvu yake yopirira kuwonongeka kwa magetsi.

Gulu:

Kaolin yotsukidwa ndi madzi ndi kaolin yokhala ndi calcium metakaolin

Kagwiritsidwe:

Kaolin imagwiritsidwa ntchito kwambiri, makamaka popanga mapepala, zinthu zadothi, ndi zinthu zotsutsa, kutsatiridwa ndi zokutira, zodzaza rabara, ma glaze a enamel, ndi zinthu zopangira simenti yoyera. Mu zochepa, imagwiritsidwa ntchito m'magawo amakampani monga mapulasitiki, utoto, utoto, mawilo opukutira, mapensulo, zodzoladzola za tsiku ndi tsiku, sopo, nsalu, mafuta, mankhwala, zipangizo zomangira, ndi zina zotero.