US4115137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing cement clinker from chlorine-containing raw mixture
Assignee: Individual
•
Filing: 1977-05-13
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Granted: 1978-09-19
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Expires: 1997-05-13
Abstract
Abstract The herein-proposed method of producing cement clinker from a chlorine-containing raw mixture, comprising the steps of introducing said mixture into a kiln, sintering of the mixture, removing chlorine-containing compounds from the resultant sinter by acting on the sinter with a steam-gas-and-air mixture, subsequently regenerating the chlorine-containing compounds and cooling the resultant clinker, is characterized by the fact that the sinter is suspended in the steam-gas-and-air mixture, and the regeneration of the chlorine-containing compounds is carried out by spraying the raw mixture in a stream of chlorine-containing flue gases.
Inventors
- 👤 Boris Izrailovich Nudelman
- 👤 Valentina Petrovna Sharova
- 👤 Grant Leonidovich Ter-Aganov
- 👤 Lev Matveevich Sosenko
- 👤 Marsel Yanovich Bikbau
- 👤 Vadim Alexandrovich Kulabukhov
- 👤 Valentin Vasilievich Sheludko
- 👤 Ida Timofeevna Uvarova-Nistratova
- 👤 Albert Pavlovich Simon
- 👤 Boris Abramovich Perlin
- 👤 Mikhail Gavrilovich Chepkalenko
- 👤 Alevtina Anatolievna Gasanova
- 👤 Guzal Abdulkhaevna Galimova
- 👤 Rashida Gafievna Bodyagina
- 👤 Arnold Arnoldovich Kevvai
- 👤 Boris Samuilovich Albats
- 👤 Gennady Andreevich Babin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:24
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/36; Y; Y02; Y02P; Y02P40/00; Y02P40/10; Y02P40/121
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
123 words
In a method of producing cement clinker from a chlorine-containing raw mixture, wherein a cement clinker raw mixture including chlorine containing compounds is introduced into a kiln and is sintered in said kiln forming a sinter layer and thereafter producing said clinker, the steps comprising after sintering said raw mixture introducing a steam-gas-and-air mixture into said kiln into contact with said sinter layer, at such a rate as to suspend said sinter layer in said steam-gas-and-air mixture and to remove chlorine-containing compounds from said sinter by thermal decomposition, regenerating said chlorine-containing compounds by spraying the raw mixture used to produce said clinker prior to sintering in a stream of chlorine-containing flue gases and after treatment with said steam-gas-and-air mixture, cooling the resultant clinker.
Claim 2
Dependent Claim
123 words
In a method of producing cement clinker from a chlorine-containing raw mixture, wherein a cement clinker raw mixture including chlorine containing compounds is introduced into a kiln and is sintered in said kiln forming a sinter layer and thereafter producing said clinker, the steps comprising after sintering said raw mixture introducing a steam-gas-and-air mixture into said kiln into contact with said sinter layer, at such a rate as to suspend said sinter layer in said steam-gas-and-air mixture and to remove chlorine-containing compounds from said sinter by thermal decomposition, regenerating said chlorine-containing compounds by spraying the raw mixture used to produce said clinker prior to sintering in a stream of chlorine-containing flue gases and after treatment with said steam-gas-and-air mixture, cooling the resultant clinker.
Claim 3
Dependent Claim
20 words
A method as claimed in claim 1, wherein said sinter is ground to a particle size not exceeding 20 mm.
Claim 4
Dependent Claim
44 words
A method as claimed in claim 1, wherein the products of fuel combustion in an amount of about 1 to 40% of the total fuel used for sintering are used as the steam-gas-and-air mixture at an air coefficient α of about 0.95 to 2.
Claim 5
Dependent Claim
38 words
A method as claimed in claim 3, wherein steam is introduced directly under the sinter layer in addition to the combustion gases in an amount of about 5 g. to 200 g. of water per kg. of sinter.
Claim 6
Dependent Claim
27 words
A method as claimed in claim 1, wherein the products of fuel combustion are introduced into the sinter layer at an angle of about 35° to 90°.
Claim 7
Dependent Claim
27 words
A method as claimed in claim 3, wherein the products of fuel combustion are introduced into the sinter layer at an angle of about 35° to 90°.
Claim 8
Dependent Claim
27 words
A method as claimed in claim 4, wherein the products of fuel combustion are introduced into the sinter layer at an angle of about 35° to 90°.
Claim 9
Dependent Claim
42 words
A method as claimed in claim 1, wherein, the process is carried out in a rotary kiln operating on liquid fuel and the liquid fuel is introduced into the kiln in a direction opposite to that of the rotation of the kiln.
Claim 10
Dependent Claim
42 words
A method as claimed in claim 3, wherein, the process is carried out in a rotary kiln operating on liquid funnel and the liquid fuel is introduced into the kiln in a direction opposite to that of the rotation of the kiln.
Claim 11
Dependent Claim
42 words
A method as claimed in claim 4, wherein, the process is carried out in a rotary kiln operating on liquid fuel and the liquid fuel is introduced into the kiln in a direction opposite to that of the rotation of the kiln.
Claim 12
Dependent Claim
40 words
A method as claimed in claim 1, wherein, the process is carried out in a rotary kiln operating on liquid fuel and the liquid fuel is introduced along the axis of the kiln onto the surface of the sinter layer.
Claim 13
Dependent Claim
40 words
A method as claimed in claim 3, wherein, the process is carried out in a rotary kiln operating on liquid fuel and the liquid fuel is introduced along the axis of the kiln onto the surface of the sinter layer.
Claim 14
Dependent Claim
41 words
A method as claimed in claim 4, wherein, when the process is carried out in a rotary kiln operating on liquid fuel and the liquid fuel is introduced along the axis of the kiln onto the surface of the sinter layer.
Claim 15
Dependent Claim
32 words
A method as claimed in claim 1, wherein spraying of the raw mixture is carried out in a stream of chlorine containing flue gases having a temperature of 200° to 1000° C.
Claim 16
Dependent Claim
46 words
A method as claimed in claim 1, wherein spraying of the raw mixture in the stream of chlorine-containing flue gases with a contact surface of about 15 to 100 m. 2 /m. 3 is performed by blowing compressed gas through the layer of the raw mixture.
Claim 17
Dependent Claim
56 words
A method as claimed in claim 14, wherein spraying of the raw mixture in the stream of chlorine-containing flue gases with a contact surface of about 15 to 100 m. 2 /m. 3 is performed by blowing compressed gas through the layer of the raw mixture at a nozzle velocity of about 20 to 100 m./sec.
Claim 18
Dependent Claim
14 words
A method as claimed in claim 16, wherein blowing is carried out with air.
Claim 19
Dependent Claim
15 words
A method as claimed in claim 16, wherein blowing is carried out with flue gases.
Claim 20
Dependent Claim
39 words
A method as claimed in claim 1, wherein, when the process is carried out in a rotary kiln and spraying of the raw mixture in the stream of chlorine-containing flue gases is performed along the axis of the kiln.
Claim 21
Dependent Claim
38 words
A method as claimed in claim 14, wherein, the process is carried out in a rotary kiln and spraying of the raw mixture in the stream of chlorine-containing flue gases is performed along the axis of the kiln.
Claim 22
Dependent Claim
28 words
A method as claimed in claim 1, wherein spraying of the raw mixture in the stream of chlorine-containing flue gases is carried out in a downstream heat exchanger.
Claim 23
Dependent Claim
16 words
A method as claimed in claim 21, wherein the stream of chlorine-containing flue gases is turbulized.
Claim 24
Dependent Claim
66 words
A method as claimed in claim 1 wherein said sinter layer is contacted with a steam-gas-and air mixture containing combustion fuel in an amount of about 1 to 40% of the total fuel used for sintering and wherein the temperature of said sinter layer is maintained constant at about 900° to 1200° C. for about 3 to 20 minutes by combusting said fuel in said layer.
Claim 25
Dependent Claim
26 words
A method as claimed in claim 14 wherein said raw mixture is contacted with said flue gases for a period of about 0.5 to 8 minutes.
References Cited (Backward Citations)
US3826664A
Cited
US4001031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |