Abstract A raw mixture for the production of cement consisting of calcareous, aluminous, silicaceous, ferrous, magnesium-containing components and calcium chloride; said components being contained in the raw mixture in the following proportions, per cent by weight: ______________________________________ calcareous component
(calculated for CaO) 30 to 42.3
silicaceous component
(calculated for SiO 2 )
12.5 to 17.5
aluminous component
(calculated for Al 2 O 3 )
1.6 to 12.4
ferrous component
(calculated for Fe 2 O 3 )
0.6 to 4.4
magnesium-containing component
(calculated for MgO) 1.5 to 8
calcium chloride 6 to 20
losses at calcination the balance.
______________________________________ The above composition makes it possible to perform calcination of the raw mixture at substantially lower temperatures (within the range of from 1,000° to 1,100° C) and to obtain cement possessing a higher activity.
Inventors
👤 Boris Izrailovich Nudelman
👤 Alexandr Sergeevich Sventsitsky
👤 Marsel Yanovich Bikbau
👤 Isaak Mozesovich Bun
👤 Arnold Arnoldovich Kevvai
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-06 13:14
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/345; C04B7/3456
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
A raw mixture for the production of cement consisting of calcareous, silicaceous, aluminous, ferrous and magnesium-containing components and calcium chloride contained in the raw mixture in the following proportions, percent by weight: ______________________________________
calcareous component
calulated per CaO 30 to 42.3
silicaceous component
calculated for SiO.sub.2
12.5 to 17.5
aluminous component
calculated for Al.sub.2 O.sub.3
1.6 to 12.4
ferrous component
calculated for Fe.sub.2 O.sub.3
0.6 to 4.4
magnesium-containing component
calculated for MgO 1.5 to 8
calcium chloride 6 to 20
losses at calcination the balance.
______________________________________
Claim 2
Dependent Claim
86 words
A raw mixture for the production of cement consisting of calcareous, silicaceous, aluminous, ferrous and magnesium-containing components and calcium chloride contained in the raw mixture in the following proportions, percent by weight: ______________________________________
calcareous component
calulated per CaO 30 to 42.3
silicaceous component
calculated for SiO.sub.2
12.5 to 17.5
aluminous component
calculated for Al.sub.2 O.sub.3
1.6 to 12.4
ferrous component
calculated for Fe.sub.2 O.sub.3
0.6 to 4.4
magnesium-containing component
calculated for MgO 1.5 to 8
calcium chloride 6 to 20
losses at calcination the balance.
______________________________________
Claim 3
Dependent Claim
27 words
A raw mixture according to claim 1, wherein said mixture is effective to produce cement clinker at a calcination temperature of about 1000° C. to 1100° C.
Claim 4
Dependent Claim
51 words
A raw mixture according to claim 1, wherein said mixture is effective to produce cement clinker at a calcination temperature of about 1000° C. to 1100° C. and wherein cement produced from said clinker has an ultimate compression strength of about 500 to 650 kgf./cm. 2 after 28 days of hardening.
Claim 5
Dependent Claim
30 words
A method of producing cement clinker having a high hydration activity which comprises sintering the raw mixtures defined in claim 1 at a temperature of about 1000° to 1100° C.
Claim 6
Dependent Claim
35 words
A method of producing cement clinker according to claim 4 wherein said clinker is effective to produce cement having an ultimate compression strength of about 500 to 650 kgf./cm. 2 after 28 days of hardening.