Mankhwala enaake a okusayidi: katundu, Kukonzekera, ntchito

okusayidi mankhwala enaake a ambiri amati zambiri chabe yopsereza magnesia kapena okusayidi magnesium. Nkhanizi ndi opepuka ndi chabwino crystalline ufa woyera. Mu chikhalidwe, okusayidi mankhwala enaake a kumachitika ngati periclase mchere. The adzasowa chakudya ndi mankhwala odziwika monga munthu zowonjezera chakudya pansi kachidindo E530.

Katundu wa okusayidi mankhwala enaake a

Chemical chilinganizo cha thunthu: MgO. pawiri uyu ali pafupifupi palibe fungo mu amoniya ndi chidulo mosavuta sungunuka m'madzi, solubility ake pa 30 ° C ndi magalamu 0,0086 okha / 100 ml, ndi mowa ndipo zilibe kupasuka. Molar misa MgO - 40,3044 g / mol. Pa 20 ° C ndi osalimba ake ndi 3,58 g / cm³, otentha kutentha - 3600 ° C, kusungunuka - 2852 ° C. Melkokristallichesky mankhwala enaake a okusayidi ndi mankhwala wokangalika. Iwo amatha kungolandira mpweya woipa kupanga carbonate lolingana:

• MgO + NKHA ₂ = MgCO _3;

ngakhale pang'onopang'ono, koma amachitira ndi madzi, kupanga insoluble ofooka m'munsi :

• H ₂ O + MgO = mg (o) _2;

ali anachitira ndi asidi ndi:

• 2HCl + MgO = MgCl ₂ + H ₂ O

The calcined mankhwala enaake a okusayidi wotaya reactivity ake. Tiyeneranso ananenanso kuti gigroskopechen izi ufa.

Kukonzekera okusayidi mankhwala enaake a

Makampani, pawiri ili linakonzedwa kwenikweni ndi kuwombera. zipangizo zopangira ntchito mchere monga dolomite (MgCO3.CaCO3) kapena magnesia (MgCO3). Komanso, magnesia ikuchitika ntchito calcination bishofit (MgCl ₂ × 6H ₂ O) mu nthunzi ya madzi, calcining mg (o) 2 ndi zina kusokonekera kutentha MG mankhwala. M'mikhalidwe choyezera, MgO akhoza kukonzekera zimene zigawo zake constituent:

• 2Mg + O ₂ = 2MgO;

kapena kuwonongeka matenthedwe a mchere wina kapena hydroxide:

• MgCO ₃ = MgO + NKHA _2.

Malinga njira yopanga okusayidi mankhwala enaake a adafuna kusiyanitsa mitundu iwiri waukulu wa mankhwala: kuwala ndi magnesia lolemera. Woyamba ndi ufa colorless, amene n'zosavuta zokwanira kulowa zimene yosiyanasiyana zidulo kuchepetsa, umene MG salt anapanga. The chachiwiri imakhala ndi timibulu chachikulu cha masoka kapena kupanga periclase ndi wolemekezeka madzi kukana ndi zambiri inert.

okusayidi mankhwala enaake a

Makampani, pawiri ichi ntchito popanga simenti, refractory, monga filler mu mphira ndi mchere chithandizo mafuta. Ultralight mankhwala enaake a okusayidi ntchito ngati zabwino kwambiri abrasive, amene anali mwayeretsa pamwamba. Kwenikweni, ntchito makampani zamagetsi. Komanso, magnesia chimagwiritsidwa ntchito mankhwala. Kodi MgO ntchito kuphwanya chapamimba acidity mlingo zikuchitika chifukwa ndi muyeso wa acid amathiridwa. okusayidi mankhwala enaake a komanso kutenga neutralizing yogwira mwangozi anagwira mmimba. Makampani chakudya MgO ntchito monga chakudya zowonjezera (E530) code, amene kumathandiza clumping ndi caking. Magnesia amagwiritsidwanso ntchito mafizo. Apa, ufa umagwiritsidwa m'manja mwa akatswiri a zolankhulirana ndi zida zolimbitsa anali wodalirika kwambiri. Kuwonjezera kuti okusayidi mankhwala enaake a ndi imaonetsa mtheradi. Chinyezimiritso koyefishienti wa chinthu mu yaitali kawalidwe gulu ndiyofanana ndi umodzi choncho akhoza ntchito monga Buku woyera.