US4119467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement and process for producing same
Assignee: Individual
•
Filing: 1977-05-17
•
Granted: 1978-10-10
•
Expires: 1997-05-17
Abstract
Abstract A cement having the following composition, parts by weight: ______________________________________ alite 1 to 50 belite 1 to 45 calcium chloroaluminate 30 to 1 highly-basic calcium chlorosilicate 75 to 5 calcium chloro-orthosilicate 55 to 5 calcium chlorcalumoferrite 2 to 22. ______________________________________ The cement is made by mixing the following ingredients, in parts by weight, calcareous component (calculated for CaO) 34 to 44, silicaceous component (calculated for SiO 2 ) 9.5 to 17, aluminous component (calculated for Al 2 O 3 ) 1.6 to 14, ferrous component (calculated for Fe 2 O 3 ) 0.8 to 5, calcium chloride (calculated for CaCl 2 ) 8.0 to 23, firing the mixture at a temperature of 1,000° to 1,200° C., and then at a temperature of 1,200° to 1,400° C. The product is then cooled and ground.
Inventors
- 👤 Boris Izrailovich Nudelman
- 👤 Marsel Yanovich Bikbau
- 👤 Alexandr Sergeevich Sventsitsky
- 👤 Anatoly Yokovlevich Gadaev
- 👤 Ada Mirovna Prikhozhan
- 👤 Isaak Mozesovich Bun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:41
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/345; C04B7/3456
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
60 words
A cement consisting of alite, belite, calcium chloroaluminate, a highly-basic calcium chlorosilicate, calcium ortho-chlorosilicate and calcium chloroalumoferrite, the components being present in the following proportions, in parts by weight: ______________________________________
alite 1 to 50
belite 1 to 45
calcium chloroaluminate 30 to 1
highly-basic calcium chlorosilicate
75 to 5
calcium chloro-orthosilicate
55 to 5
calcium chloroalumoferrite
2 to 22.
______________________________________
Claim 2
Dependent Claim
60 words
A cement consisting of alite, belite, calcium chloroaluminate, a highly-basic calcium chlorosilicate, calcium ortho-chlorosilicate and calcium chloroalumoferrite, the components being present in the following proportions, in parts by weight: ______________________________________
alite 1 to 50
belite 1 to 45
calcium chloroaluminate 30 to 1
highly-basic calcium chlorosilicate
75 to 5
calcium chloro-orthosilicate
55 to 5
calcium chloroalumoferrite
2 to 22.
______________________________________
Claim 3
Dependent Claim
63 words
A process for producing a cement consisting of alite, belite, calcium chloroaluminate, a highly-basic calcium chlorosilicate, calcium chloro-orthosilicate and calcium chloroalumoferrite, the components being in the following proportions, in parts by weight: ______________________________________
alite 1 to 50
belite 1 to 45
calcium chloroaluminate 30 to 1
highly-basic calcium chlorosilicate
75 to 5
calcium chloro-orthosilicate
55 to 5
calcium chloroalumoferrite
2 to 22,
______________________________________
Claim 4
Dependent Claim
63 words
A process for producing a cement consisting of alite, belite, calcium chloroaluminate, a highly-basic calcium chlorosilicate, calcium chloro-orthosilicate and calcium chloroalumoferrite, the components being in the following proportions, in parts by weight: ______________________________________
alite 1 to 50
belite 1 to 45
calcium chloroaluminate 30 to 1
highly-basic calcium chlorosilicate
75 to 5
calcium chloro-orthosilicate
55 to 5
calcium chloroalumoferrite
2 to 22,
______________________________________
Claim 5
Dependent Claim
62 words
comprising blending a calcareous, silicaceous, aluminous ferrous components and calcium chloride in the following proportions, parts by weight: ______________________________________
calcareous component (calculated for CaO)
34 to 44
silicaceous component (calculated for SiO.sub.2)
9.5 to 17
aluminous component (calculated for Al.sub.2 O.sub.3)
1.6 to 14
ferrous component (calculated for Fe.sub.2 O.sub.3)
0.8 to 5
calcium chloride (calculated for CaCl.sub.2)
8.0 to 23;
______________________________________
Claim 6
Dependent Claim
62 words
comprising blending a calcareous, silicaceous, aluminous ferrous components and calcium chloride in the following proportions, parts by weight: ______________________________________
calcareous component (calculated for CaO)
34 to 44
silicaceous component (calculated for SiO.sub.2)
9.5 to 17
aluminous component (calculated for Al.sub.2 O.sub.3)
1.6 to 14
ferrous component (calculated for Fe.sub.2 O.sub.3)
0.8 to 5
calcium chloride (calculated for CaCl.sub.2)
8.0 to 23;
______________________________________
Claim 7
Dependent Claim
51 words
subjecting the resulting raw mixture to calcination in two stages: the first stage being carried at a temperature within the range of from 1,000° to 1,200° C, the second stage -- at a a temperature within the range of from 1,200° to 1,400° C; the resulting clinker is cooled and ground.
Claim 8
Dependent Claim
51 words
subjecting the resulting raw mixture to calcination in two stages: the first stage being carried at a temperature within the range of from 1,000° to 1,200° C, the second stage -- at a a temperature within the range of from 1,200° to 1,400° C; the resulting clinker is cooled and ground.
Claim 9
Dependent Claim
48 words
A process as claimed in claim 2, wherein the raw mixture composition also contains chlorides of alkali metals selected from the group consisting of sodium chloride, potassium chloride and a mixture of both in an amount of from 5 to 60% by weight of the calcium chloride employed.
Claim 10
Dependent Claim
27 words
A process as claimed in claim 2, wherein the second stage of calcination is performed at a temperature within the range of from 1,200° to 1,250° C.
Claim 11
Dependent Claim
27 words
A process as claimed in claim 2, wherein said second stage of calcination is performed at a temperature within the range of from 1,250° to 1,400° C.
Claim 12
Dependent Claim
49 words
A process according to claim 2, wherein said first stage of calcination is carried out to complete the clinker-formation process and said second stage of calcination is carried out for a shorter period than said first stage to increase the proportion of said alite and belite in said cement.
Claim 13
Dependent Claim
21 words
A process according to claim 6, wherein the second stage of calcination is carried out for about 5 to 40 minutes.
Claim 14
Dependent Claim
80 words
A process according to claim 2, wherein the setting time of said cement is varied without the introduction of setting time retarding agents by varying the proportion of alite and belite in said cement composition and wherein said first stage of calcination is carried out to complete the clinker formation process and said second stage of calcination is carried out for the period and temperature required to increase the proportion of said alite and said belite to the desired proportions.
References Cited (Backward Citations)
US3628973A
Cited
US4028126A
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US3782992A
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US3864138A
Cited
US3947283A
Cited
US3942994A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |