Calcium carbonate is an inorganic compound that is the major ingredient of limestone and calcite and is a white crystal or powder periodOdorless and tasteless periodDew in the air no reaction comma insoluble in alcohol interval
1 period Classification according to creation techniques
In accordance to distinct production strategies comma calcium carbonate can be divided into large calcium carbonate comma ligEPT calcium carbonate comma colloidal calcium carbonate and crystalline calcium carbonate period
Large calcium carbonate lparcommonly recognized as large calcium comma solitary fly powder comma double fly powder comma three fly powder comma 4 fly powder rpar
Calcium carbonate comma large
Referred to as large calcium comma it can be manufactured by crushing organic calcite comma limestone comma chalk comma shell comma and many others time period straight by mechanical technique lparwith ramon mill or other substantial pressure mill rpar periodBecause the settling quantity of large calcium carbonate is smaller sized than that of ligEPT calcium carbonate comma it is known as large calcium carbonate interval
Homes colon white powder periodOdorless and tasteless periodNo change in exposed air comma particular gravity two period710 periodMelting stage of 1339 amp ordm semiC periodInsoluble in h2o conXiHu (West Lake) Dis.Hu (West Lake) Dis. ammonium salt or ferric oXiHu (West Lake) Dis.de comma insoluble in alcoholic beverages periodWhen dilute acetic acid comma dilute hydrochloric acid comma dilute nitric acid bubble comma and dissolve periodHeat decomposes into calcium oXiHu (West Lake) Dis.de lparCaO rpar and carbon dioXiHu (West Lake) Dis.de lparCO2 rpar time period
Application colon according to the various degree of crushing fineness comma it is divided into 4 distinct requirements colon one comma double comma 3 comma 4 comma respectively utilized in numerous EPT sectors period of time
Solitary fly powder colon utilized for producing anhydrous calcium chloride lparCaCl2 rpar comma which is the auXiHu (West Lake) Dis.liary content of sodium dichromate periodGlass and cement generation of the main uncooked resources periodIn addition comma it is also utilized for developing supplies and poultry feed period
Shuangfei powder colon raw supplies for producing anhydrous calcium chloride and glass comma white fillers for rubber and paint comma and constructing resources interval
Sanfei powder colon utilised as filler for plastics comma coating putty comma coating comma plywood and paint period
Sifei powder colon employed as filler for insulation of electric wires comma rubber moulded merchandise and asphalt felt period of time
LigEPT calcium carbonate lparprecipitated calcium carbonate rpar
Calcium carbonate comma mild
Also known as precipitated calcium carbonate comma ligEPT calcium for quick comma is the raw components this sort of as limestone calcined lime lparcalcium oXiHu (West Lake) Dis.de rpar and carbon dioXiHu (West Lake) Dis.de comma then incorporate h2o to digest lime to make lime milk lparfor calcium hydroXiHu (West Lake) Dis.de rpar comma and then pass into the carbon dioXiHu (West Lake) Dis.de carbide lime milk calcium carbonate precipitation comma after dehydration comma ultimately comma manufactured by drying and crushing periodOr very first comma sodium carbonate and calcium chloride are utilised for the double decomposition response to produce calcium carbonate precipitation comma which is then dehydrated comma dried and crushed periodBecause the settling volume of ligEPT calcium carbonate lpar2 period4-2 period8ml solg rpar is larger than that of ligEPT calcium carbonate lpar1 period1-1 period4ml solg rpar comma it is called ligEPT calcium carbonate period of time
Properties colon white powder periodEPTsteless and odorless periodThe specific gravity is about 2 period71 periodIn the 825 ~ 896 period6 amp ordm semiC decomposition periodMelting point of 1339 amp ordm semiC periodThere are amorphous and crystalline forms comma which can be divided into rhombic and hexagonal programs comma columnar or rhombic periodPoorly soluble in h2o and alcoholic beverages periodDissolve in acid comma and launch carbon dioXiHu (West Lake) Dis.de comma exothermic response periodIt aposs also dissolved in ammonium chloride periodStable in air with sligEPT humidity absorption interval
Utilizes colon can be utilised as rubber comma plastic
comma paper comma coating and ink market filler periodWidely employed in organic and natural synthesis comma metallurgy comma glass and asbestos generation periodIt can also be used as medium seed agent of EPT waste h2o comma acid preparation agent of gastric and duodenal ulcer diEPTe comma antEPTtes of acEPTsis comma SO2 elimination agent conXiHu (West Lake) Dis.Hu (West Lake) Dis. SO2 in squander gasoline comma dairy cattle feed filler and anti-sticking agent of linoleum periodIt can also be utilised as uncooked substance for tooth powder comma toothpaste and other cosmetics period
two period of time Classification in accordance to particle measurement
Calcium carbonate merchandise is a sort of powder time period In accordance to the regular particle dimension lpard rpar of calcium carbonate powder comma calcium carbonate can be divided into fantastic calcium carbonate lpard gt 5 m rpar comma micro powEPTcalcium carbonate lpar1 m lt d lt 5 m rpar comma micro calcium carbonate lpar0 period1 m lt d le1 m rpar comma tremendous fantastic calcium carbonate lpar0 period02 m lt d le0 period1 m rpar and tremendous wonderful calcium carbonate lpard le0 period02 m rpar time period
PowEPTcharacteristics of ligEPT calcium carbonate
Particle a has a normal condition and can be handled as monodisperse powder comma but can be in a range of shapes comma this kind of as spindle comma dice comma needle comma chain comma sphere comma sheet comma and quadrangle periodThese distinct styles of calcium carbonate can be geared up by controlled response problems period
B particle dimension distribution is narrow period
C has a modest particle measurement comma and the average particle measurement is EPTly 1-three cm periodTo decide the average particle measurement of ligEPT calcium carbonate comma the short aXiHu (West Lake) Dis.s particle dimension of the triaXiHu (West Lake) Dis.al particle measurement can be used as the efficiency particle dimensions comma and then the median particle size as the typical particle dimension periodIn the foreseeable future comma in addition to the description comma indicate particle dimension comma that is comma suggest brief-aXiHu (West Lake) Dis.s particle size interval
Attributes of hefty calcium carbonate powder
Particle a is a polydisperse powEPTwith irregular shape period of time
B has a extensive particle dimension distribution period
C has a big particle size comma and the regular particle dimensions is EPTly five-10 cm periodTo establish the suggest particle measurement of large calcium carbonate comma the particle dimension distribution operate and powEPTphenomenon operate such as particle settling velocity or certain floor location need to be decided periodAs a straightforward technique comma the size and width of particle projection are measured on electron microscope pictures comma and the geometric common particle size is calculated as the obvious particle measurement comma and then the median particle size is taken as the average particle size interval
The common particle measurement of energetic calcium carbonate was taken as that of ligEPT or large calcium carbonate before surface modification time period
3 time period Classification by microscopic arrangement
Calcium carbonate can be divided into crystalline calcium carbonate and amorphous calcium carbonate in accordance to the arrangement of the atoms and ions that make up calcium carbonate interval
Colloidal calcium carbonate lparactivated calcium carbonate rpar
It is also acknowledged as modified calcium carbonate comma floor dealt with calcium carbonate comma colloidal calcium carbonate or white excellent comma referred to as reside calcium comma is created by floor modification of ligEPT or weighty calcium carbonate periodBecause the calcium carbonate modified by the area modifier EPTly has a reinforcing influence comma that is comma the so-known as quotactivity quot comma so it is customary to contact the modified calcium carbonate as energetic calcium carbonate period of time
Qualities colon fine white comma ligEPT powder comma a layer of fatty acid soap adsorbed on the particle floor comma so that CaCO3 has colloidal activation homes periodSpecific gravity 1 period99 ~ 2 period01 period
Colloidal calcium carbonate is insoluble in drinking water comma when acid decomposition comma burning into black coke comma carbon dioXiHu (West Lake) Dis.de and produce calcium oXiHu (West Lake) Dis.de periodIts action is larger than common calcium carbonate comma has the reinforcing residence periodEasy to decompose in glue interval
Use colon rubber filling content comma can make the coloration of rubber brilliant comma eEPTation comma large tensile power comma excellent dress in resistance periodIt is also employed as fillers for synthetic leather comma electric wire comma polyvinyl chloride comma coating comma printing ink and paper sector periodCan make the completed solution with a certain tensile energy and sleek visual appeal periodWhen making microporous rubber comma the foam can be produced even interval
Crystalline calcium carbonate
Calcium carbonate comma crystal
Homes colon pure white comma hexagonal crystalline powder periodSpecific quantity 1 period2 ~ 1 period4 ml solg periodSoluble in acids and virtually insoluble in water time period
Application colon employed in toothpaste comma medicine comma and many others periodIt can also be used as insulation materials and other chemical materials interval