ʻO ka umu hoʻoheheʻe kalapona pōhaku pōhaku silika

ʻO nā mea refractory i hoʻohana ʻia i ka laina slag o ka ladle mua i hui pū ʻia me nā pōhaku lepo magnesia-chrome, hoʻoheheʻe uila a laila hui pū ʻia me nā pōhaku lepo magnesia-chrome a me nā pōhaku alkaline kiʻekiʻe. Ma hope o ka hoʻohana pono ʻia ʻana o nā pōhaku lepo MgO-C ma nā mea hoʻololi, ua hoʻohana pū ʻia nā pōhaku lepo MgO-C i ka laina slag o ka ladle hoʻomaʻemaʻe, a ua loaʻa nā hopena maikaʻi. Hoʻohana maʻamau koʻu ʻāina a me Iapana i nā pōhaku lepo MgO-C i hoʻopaʻa ʻia i ka resin me kahi maʻi kalapona o 12% a 20%, ʻoiai ʻo ʻEulopa e hoʻohana nui nei i nā pōhaku lepo MgO-C i hoʻopaʻa ʻia i ka asphalt, me kahi maʻi kalapona ma kahi o 10%.

Na Kokura Steel Works o Sumitomo Metal Corporation ma Iapana i hoʻohana i nā pōhaku lepo MgO-C me ka MgO maʻiʻo o 83% a me C maʻiʻo o 14-17% e pani pono i nā pōhaku lepo magnesia-chrome i hoʻopaʻa ʻia i ka laina slag VAD, a me ke ola lawelawe o ka slag. Ua hoʻonui ʻia ka laina mai 20 mau manawa i 30-32 mau manawa [9]. Ua hoʻohana ka LF refining ladle o Sendai Steel Plant ma Iapana i nā pōhaku MgO-C e pani i nā pōhaku lepo magnesia-chrome, a ua hoʻonui ʻia ke ola lawelawe o ka laina slag mai 20-25 mau manawa a 40 mau manawa, e loaʻa ana nā hopena maikaʻi. Ua aʻo ʻo Osaka Ceramics Refractory Co., Ltd. i nā hopena o ka maʻi kalapona a me ke ʻano antioxidant ma ke kū ʻana o ka oxidation, ka pale ʻana i ka pala a me ka ikaika flexural wela kiʻekiʻe o nā pōhaku lepo MgO-C. Hōʻike ka haʻawina i nā pōhaku lepo MgO-C i hana ʻia me ka hui ʻana o ka magnesia fused a me ka magnesia sintered, me 15% phosphorus graphite a me kahi mea liʻiliʻi o ka magnesium-aluminum alloy e like me nā antioxidants, he hopena maikaʻi. Ke hoʻohana ʻia i kahi laina 100-ton LF ladle slag, ua hoʻemi ʻia ka nui o ka pōʻino e 20-30% i hoʻohālikelike ʻia me nā pōhaku MgO-C me ka ʻona kalapona o 18% a ʻaʻohe antioxidant, a ʻo ka awelika erosion rate he 1.2-1.3 mm/ kapuahi [1].

Ma muli o ka hoʻohana ʻana o koʻu ʻāina i nā pōhaku lepo MgO-C ma mua o nā pōhaku magnesia-chrome, ua ʻike ʻia ka hopena hoʻohana piha. Hoʻomaka ka laina 300t ladle slag o Baosteel Group e hoʻohana i nā pōhaku lepo magnesia-carbon MT-14A i Iulai 1989, a ua noho ke ola o ka laina slag ma luna o 100 mau manawa; ka 150T uila uila ladle slag laina hoʻohana haʻahaʻa-carbon magnesia-carbon bricks e hoʻoheheʻe i ke kila kaula, me ka pā wela o 1600 ℃ ~ 1670 ℃, i loaʻa i nā hopena maopopo.

ʻO kā mākou hui kūikawā i ka hanaʻana i nā pōhaku lepo magnesia, alumini-magnesia carbon brick, non-carbon bricks no ka hoʻomaʻemaʻe ladles, aluminum-silicon carbide carbon bricks no nā pahu torpedo, a me ka carbon-free magnesia bricks a me nāʻano amorphous refractories, e like me ka hoʻoponopono. a me na mea hana pu no na mea hoohuli, na kapuahi uila a me na ipu. Hāʻawi pū mākou i nā huahana vibration, e like me ka ladle air bricks, air-permeable nozzle noho brick, nozzle noho brick a me nā mea i hana mua ʻia. Ua hoʻomohala mākou i kahi ʻoihana refractory piha e hoʻohui ana i ka noiʻi maka, ka hana hohonu a me ke kālepa. Loaʻa i kā mākou keʻena keʻena keʻena piha o nā mea hoʻāʻo a me ka nānā ʻana. Hiki i kā mākou mea hana ke hana i nā mea maka, nā huahana i hoʻopau ʻia, hoʻāʻo a nānā, a hoʻomohala i nā huahana hou. Manaʻo mākou ʻo ka ʻepekema a me ka ʻenehana ko mākou alakaʻi. No laila, ua loaʻa iā mākou ka ʻenehana kiʻekiʻe ma ka home a ma waho, hoʻomaikaʻi mau i ka maikaʻi o ka huahana, ʻepekema a me ka ʻenehana a me ka paʻa paʻa, no laila e hoʻomaikaʻi ai i ka ʻenehana hana a hoʻonui mau i kā mākou mea hana. Hāʻawi mākou i nā lawelawe ʻenehana piha e like me ka nui a me nā ʻenehana ʻenehana o nā mea hoʻololi, nā umu uila arc a me nā ladle e like me nā koi o ka mea kūʻai aku.