US4179302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Raw mixture for the production of cement clinker
Assignee: Tashkentsky Nauchno-Issle I Proektny Inst Stroitelnykh Materialo
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Filing: 1977-06-07
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Granted: 1979-12-18
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Expires: 1997-06-07
Abstract
Abstract A raw mixture for the production of a cement clinker which consists of lime, argillaceous and ferrous components and a mixture of chlorides of calcium, potassium and sodium, the components being contained in the following proportions, percent by mass: lime component --55 to 63 argillaceous component --23 to 17 ferrous component --4 to 1 calcium chloirde --17.8 to 4 potassium chloride --0.1 to 7.5 sodium chloride --0.1 to 7.5. The raw mixture is useful in the low-temperature processes for production of cement. The use of the raw mixture according to the present invention makes it possible to utilize alkali-containing raw materials (soda production wastes, cement dust recycle).
Inventors
- 👤 Boris I. Nudelman
- 👤 Anatoly Y. Gadaev
- 👤 Marsel Y. Bikbau
- 👤 Petr T. Shishkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:21
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/36; C04B7/38; C04B7/42; C04B7/345; C04B7/3456
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
42 words
A raw mixture for the production of a cement clinker consisting of the following components, percent by mass: lime component--55 to 63 clay component--23 to 17 ferrous component--4 to 1 calcium chloride--17.8 to 4 potassium chloride--0.1 to 7.5 sodium chloride--0.1 to 7.5.
Claim 2
Dependent Claim
42 words
A raw mixture for the production of a cement clinker consisting of the following components, percent by mass: lime component--55 to 63 clay component--23 to 17 ferrous component--4 to 1 calcium chloride--17.8 to 4 potassium chloride--0.1 to 7.5 sodium chloride--0.1 to 7.5.
Claim 3
Dependent Claim
14 words
A raw mixture according to claim 1 in which said lime component is limestone.
Claim 4
Dependent Claim
18 words
A raw mixture according to claim 1 in which said ferrous component is pyrite cinders or copper-smelting slag.
Claim 5
Dependent Claim
32 words
A raw mixture according to claim 1 in which said lime component is limestone, said ferrous component is pyrites cinders or copper-smelting slag and said clay component is loess loam or clay.
Claim 6
Dependent Claim
69 words
A raw mixture according to claim 1 in which the proportions of said ingredients are such as to provide cement clinker by calcination thereof at about 1000° to 1200° C., which contains highly basic silicate, low-basic silicate and calcium aluminate and alumoferrite in a ratio such that cement prepared with said cement clinker has a compression strength after 28 days hardening of about 400 to 520 kgf./cm 2 .
Claim 7
Dependent Claim
68 words
A raw mixture as defined in claim 1 in which the proportion of said ingredients are such as to provide a cement clinker by a calcination thereof at a temperature of about 1000° C. to 1200° C. which contains 40 to 80% by mass of highly-basic silicate, about 10 to 45% by mass of low-basic silicate and about 10 to 20% by mass of calcium aluminate and alumoferrite.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |