Calcium pūkawa. whakaahuatanga

I roto i te Modern pararopi Matū tai faufaa rahi whakarōpū me āhuatanga o ngā huānga pāhekoheko me o ratou pūhui taea katoa. He matū e, i roto i ētahi atu noho te wahi motuhake. kia taua pūhui i roto i ngā kia tuku konupūmā pūkawa. Tātai taonga CaSO4.

putunga āhua nui o tenei pūhui i roto i te kirinuku tukua tona whakamahi rite te rauemi raw i roto i te faaineineraa o rauemi rerekē. Ka taea te pai te whakamahi i te rauemi hua i roto i te hanga, te rongoā, me te tahi atu wāhi.

putunga kohuke kitea he hanganga o CaSO4 2 H2O I roto i tikanga tūturu. Kei te kitea hoki konupūmā pākawa i roto i te moana, (e pā ana ki 1800 000 tana ia mita pūtoru) me te wai hou.

CaSO4 anhydride Ko te kiato paura ma o 2.90-2.99 karamu ia henemita pūtoru. Pūhui kaha absorbs makuku i te rangi. No te mea o tenei taonga, me te konupūmā pākawa whakamahia rite te kaihoko whakamaroke.

I pāmahana mano e wha rau e rima tekau nekehanga taonga aua mea, me te decomposes. whakarei te memehatanga o te taonga i roto i te aroaro o HCl, HNO3, NaCl, MgCl2. tauhohe Calcium pūkawa ki te waikawa pungatara te heke ka sintering ki waro.

Te riroraa i roto i te wai tahi ki MgSO4 ko MgCl2, CaSO4 rigidity homai reira he tamau. Ko taea Matū inu tamarûraa ki te tauhohenga. Tuhinga o pakeke o te wai i runga i te whakataki o matū taonga ona ngota tīhiko.

Kei te hoki kawea tamarûraa o te wai i roto i na roto i te utu katote. hāngai ana tēnei tikanga i runga i te kaha o etahi exchangers katote waihanga, me te taiao - pūhui tiketike-rāpoi - ngā whakawhitiwhiti Radicals i roto i to ratou hanganga, i runga i te ngota kei roto i te wairewa. Ka rite ki maha haa exchangers katote aluminosilicates (Na2 [Al2Si2O8] ∙ nH2O, hei tauira).

Hydrate ki te hanganga 2CaSO4 H2O - kohatu (gypsum tinana) - whakamahia i roto i te hanga o ngā rauemi cementitious. Ēnei matū tohu he pūhui pulverulent, o nei ina konatunatua ki te puka wai kirihou tuatahi, a muri solidifying ki te taimaha tinana mārō. kawea tukanga faaineineraa i roto i roto i te calcination gypsum kohatu, i raro i te mana o te pāmahana i kotahi rau e rima tekau ki te kotahi rau e whitu tekau nga nekehanga. whakamahia ana tēnei taonga i roto i te hanga o awhi arai, me papa, pakete tūemi, me rite i roto i te whakatinanatanga o te raima.

Calcination i raro i te mana o te pāmahana neke atu i rua rau nekehanga arata'i ki te hanganga o te puka wairewa o te konupūmā pūkawa anhydrous, i te pāmahana nui atu i rima rau nekehanga - puka rewa. ngaro te whakamutunga ona kaha ki te tāpiri reira e kore e taea te whakamahi rite i tētahi ruruku te wai.

Ka taea te whakamahi gypsum Natural rite te rauemi tīmata i roto i te faaineineraa o te sima me waikawa pungatara i te tikanga ngā.

taea hoki te whakamahi ngāwhā konupūmā Natural rite te desiccant i te tātari o ngā pūhui matū waro. taea ki te takanga mai makuku 6.6% o te taimaha katoa te pūhui anhydrous he. Kei te whakamahia hoki konupūmā pākawa i te hanga o ngā rauemi te tuuraa i.