Lā Hoʻouna: 6, Mei, 2024
ʻOkoʻa nā kumu o ka lepo, a ʻokoʻa hoʻi nā ʻāpana o lākou. Hoʻokaʻawale ʻia ka lepo i loko o ke one a me ka ʻiliʻili i ʻekolu mau ʻāpana: ka pauka limestone, ka pālolo, a me ka calcium carbonate. Ma waena o lākou, ʻo ka pauka pōhaku nā ʻāpana maikaʻi i ke one i hana ʻia me ka nui o ka nui ma lalo o 75 μm. ʻO ia ka pōhaku makua e like me ke one i hana ʻia a loaʻa iā ia ka hui mineral like. ʻO ka mea nui ʻo CaCO3, ʻo ia kahi ʻāpana o ka haku mele ʻana o ke one i hana ʻia.
(1) E noiʻi e pili ana i ke kumu hana o ka pauka lepo a me ka polycarboxylic acid wai hoʻemi wai:
Manaʻo ʻia ʻo ke kumu nui o ka hoʻopili ʻana o ka pauka lepo i ke koki i hui pū ʻia me ka lignosulfonate a me ka naphthalene-based water reducing agents, ʻo ia ka hoʻokūkū adsorption ma waena o ka lepo lepo a me ka sima. ʻAʻohe wehewehe like ʻole e pili ana i ke kumu hana o ka pauka lepo a me ka polycarboxylic acid wai-reducing agent. Manaʻo kekahi poʻe naʻauao he ʻano like ke kumu hana o ka pauka lepo a me ka mea hoʻemi wai me ka sima. Hoʻopili ʻia ka mea hoʻohaʻahaʻa wai ma ka ʻili o ka sima a i ʻole ka lepo lepo me nā hui anionic. ʻO ka ʻokoʻa, ʻoi aku ka nui a me ka wikiwiki o ka adsorption o ka mea hoʻemi wai e ka pauka lepo ma mua o ka sima. I ka manawa like, ʻoi aku ka nui o ka wai a me ka hoʻohaʻahaʻa ʻana i ka wai manuahi i loko o ka slurry, e pili pono ana i ka hana ʻana o ka ʻuala.
(2) Nā hopena o nā minela like ʻole i ka hana o nā mea hoʻemi wai:
Hōʻike nā noiʻi ʻo ka lepo pālolo wale nō me ka hoʻonui nui a me nā waiwai absorption wai e loaʻa i kahi hopena koʻikoʻi i ka hana hana a me nā waiwai mechanical ma hope o ke kaʻa. ʻO ka lepo lepo maʻamau i loko o nā ʻāpana he kaolin, illite a me montmorillonite. ʻO keʻano likeʻole o ka mea hoʻohaʻahaʻa wai he mauʻano likeʻole ia i nā lepo lepo me nā hui mineral likeʻole, a he mea koʻikoʻi kēiaʻokoʻa no ke kohoʻana i nā mea hoʻohaʻahaʻa wai a me ka hoʻomohalaʻana i nā mea hoʻohaʻahaʻa wai a me nā mea pale.
(3) Ka hopena o ka pauda lepo ma luna o nā waiwai paʻa:
ʻAʻole pili wale ka hana ʻana o ka koneki i ka hoʻokumu ʻana i ka koneki, akā pili pū kekahi i nā ʻano mechanical hope a me ka lōʻihi o ka lāʻau. ʻAʻole paʻa ka nui o nā ʻāpana lepo lepo, emi i ka wā maloʻo a hoʻonui i ka wā pulu. I ka hoʻonui ʻana o ka lepo, inā he polycarboxylate wai-reducing agent a i ʻole naphthalene-based water-reducing agent, e hōʻemi ia i ka nui o ka hoʻohaʻahaʻa wai, ka ikaika, a me ka hāʻule ʻana o ka lepo. ʻO ka hāʻule, a me nā mea ʻē aʻe, lawe mai i ka pōʻino nui i ke kaʻa. ʻO ke kūlana aupuni "Sand for Construction" (GB/T14684-2011) e kuhikuhi ana i ka wā o ka C30 ka ikaika o ka paona a i ʻole ke kū ʻana o ka hau, anti-seepage a i ʻole nā koi kūikawā ʻē aʻe, ʻaʻole ʻoi aku ka nui o ka lepo lepo i loko o ke one maoli ma mua o 3.0 %, a ʻaʻole ʻoi aku ka nui o ka puʻupuʻu lepo ma mua o 1.0%; i ka wā i emi iho ai ka ikaika o ka lepo ma lalo o C30, ʻaʻole e oi aku ka nui o ka lepo lepo ma mua o 5.0% a ʻaʻole e oi aku ka nui o ka lepo lepo ma mua o 2.0%.
Ka manawa hoʻouna: Mei-06-2024
