Makanekiuma'okesaside: kulai, e hoomakaukau ai, noi

Makanekiuma'okesaside ua pinepine haawiia i nui wale i ke ahi magnesia a makanekiuma'okesaside. Kēia mea mea Lightweight a me ke olonā i mea pōaka keʻokeʻo he lepo lā. I ano, ke makanekiuma'okesaside ia lŘlŘ like me ka mea pōhaku periclase. Ke ai ka hana o ka waiwai a pau i kapa e like me ka ai mea hoʻonui ma lalo o kuhi E530.

Waiwai o ka makanekiuma'okesaside

Nine haʻilula o ka waiwai: MgO. Kēia hui i aneane ole ala i loko o ka ammonia, a me kaʻakika mea hana wailana i loko o ka wai, kona solubility ma 30 ° C mea wale 0,0086 nā huna / 100 ml, a me ka waiʻona, a ka mea aole ia i hoike mai. Molar nuipa a MgO - 40,3044 g. / Mol. Ma 20 ° C a me kona pa apŘ mea 3,58 g. / Cm³, nā kapuahi e wela - 3600 ° C, heheʻe - 2852 ° C. Melkokristallichesky makanekiuma'okesaside mea chemically he kaila. Ka mea, Ua hiki mai o ka paka i ke kalapona'okikene lua , e hana i ka AYEIE kalepona:

• MgO + CO ₂ = MgCO _3;

albeit lohi, akā nō reacts me ka wai, ho okumu i insoluble nawaliwali kumu :

• H ₂ O + MgO = mg (OH) _2;

ua reacted me kaʻakika.

• 2HCl + MgO = MgCl ₂ + H ₂ O

Ke calcined makanekiuma'okesaside haalele i kona reactivity. Ua E hoi e hui pu ia keia pauka gigroskopechen.

Makaukau o makanekiuma'okesaside

Ma ka hana, i hoomakaukauiaʻano nui kēia hui e ae hoʻolele. Ka maka mea hoʻohana nā minelala hao e like me dolomite (MgCO3.CaCO3) ole magnesia (MgCO3). Eia hou kekahi, magnesia ua lawe mai ka hoʻohana 'ana i ka calcination bishofit (MgCl ₂ m 6H ₂ O) i loko o ka wai uahi, calcining mg (OH) 2 a me nā lolelua ka i ana wela mg i huiʻia. Ma lalo o keʻena hoʻokolohua kumu, hiki e hoomakaukau ia e ka naoh o kona constituent eiiiiiaiou MgO:

• 2Mg + O ₂ = 2MgO;

ole ma thermal decomposition o kekahi paʻakai a hydroxide:

• MgCO ₃ = MgO + CO _2.

Ke kaumaha ma muli o ka? Iecaianoaaiiie ano o ka makanekiuma'okesaside me ke ano mua, e hoomaopopo ka papa kuhikuhi ano mau o ka hui: ka malamalama, a me ka kaumaha magnesia. Ka mea mua o ka colorless he lepo lā, i mea wale nō lawa e komo i loko o ka naoh likeʻole me ka dilute nāʻakika, hiki ia mg paʻakai i hana. I ka lua o ka ninoieo a nui nā pōaka o maoli paha kemikala periclase a me ka hanohano i ka wai ia'ku a me ka mea hou inert.

makanekiuma'okesaside

Ma ka hana, ua hui ua hoʻohana 'ia no ka manufacturing lepo pipili, refractory, me filler ma ka laholio, a no ka mea pōhaku aila lapaau. Ultralight makanekiuma'okesaside ua hoʻohana 'ia e like me he loa ke olonā i abrasive, i i huikala ili honua. Ma kekahi, ka mea, ua hoʻohana 'ia i loko o ka uila no hana. Eia hou kekahi, magnesia ua hoʻomano hoʻohana i laau lapaau. Where MgO ua hoʻohana 'ia ma ka' aʻe 'ana i gastricʻakika pae' ia ma muli i ka oi o hydrochloricʻakika. Makanekiuma'okesaside i lawe i neutralizing hana waiwai accidentally loaa i loko o ka'ōpū. Ma ka meaʻai hana MgO ua hoʻohana 'ia e like me ka ai mea hoʻonui (E530) kivila, a ua ālai' clumping a me ka caking. Magnesia i hoʻohana 'ia e ka gymnastics. Eia, o ka lepo ua pili i na lima o na 'âlapa, e hoʻokaʻaʻike me ka hoʻokō' lako a ua oi ike loea. Pākuʻi i makanekiuma'okesaside mea he piha aupuni reflector. Ka Hōʻuluʻulu Manaʻo E kaʻi lau waiwai o ka waiwai i loko o ka, ua kīkoʻo akula spectral bana mea like me ke kuikahi, a nolaila ia i pono e hoʻohana me he keʻokeʻo i maopopo nä haumäna.