GB491921A - Improved process and apparatus for the simultaneous manufacture in a rotary furnace of iron or steel and portland cement, or hydraulic lime - Google Patents
Improved process and apparatus for the simultaneous manufacture in a rotary furnace of iron or steel and portland cement, or hydraulic limeInfo
- Publication number
- GB491921A GB491921A GB6882/37A GB688237A GB491921A GB 491921 A GB491921 A GB 491921A GB 6882/37 A GB6882/37 A GB 6882/37A GB 688237 A GB688237 A GB 688237A GB 491921 A GB491921 A GB 491921A
- Authority
- GB
- United Kingdom
- Prior art keywords
- portland cement
- iron
- lime
- steel
- hydraulic lime
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/08—Making spongy iron or liquid steel, by direct processes in rotary furnaces
- C21B13/085—Making spongy iron or liquid steel, by direct processes in rotary furnaces wherein iron or steel is obtained in a molten state
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
In a process for the simultaneous manufacture of iron or steel and Portland cement or hydraulic lime in a rotary furnace which is heated by a flame produced by burning pulverized carbonaceous material with the quantity of air necessary for the production of a mixture of carbon monoxide and carbon dioxide, the charge consists of iron ore, calcium carbonate and carbonaceous material with, if required, other constituents, such as silica and alumina, the ore, carbonaceous material and the other constituents, if present, being crushed to a size, e.g. 1 mm., sufficient to prevent them being entrained in the furnace gases while the calcium carbonate is crushed as fine as possible. In an example, the production of Portland cement clinker containing 22 per cent of silica, 8 of alumina, 66,94 of lime and 3,08 of other ingredients is referred to. If hydraulic lime is to be produced, the amount of lime used is 1,2 or 1,3 times, according to the desired index of hydraulicity, that used for the production of cement. Specifications 368,312 and 436,443 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR491921X | 1936-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB491921A true GB491921A (en) | 1938-09-09 |
Family
ID=8904481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6882/37A Expired GB491921A (en) | 1936-03-09 | 1937-03-09 | Improved process and apparatus for the simultaneous manufacture in a rotary furnace of iron or steel and portland cement, or hydraulic lime |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB491921A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2209068A (en) * | 1987-08-26 | 1989-04-26 | Outokumpu Oy | Method for cooling a rotary kiln furnace |
-
1937
- 1937-03-09 GB GB6882/37A patent/GB491921A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2209068A (en) * | 1987-08-26 | 1989-04-26 | Outokumpu Oy | Method for cooling a rotary kiln furnace |
| GB2209068B (en) * | 1987-08-26 | 1991-07-24 | Outokumpu Oy | Method for cooling a rotary kiln furnace |
| AT400364B (en) * | 1987-08-26 | 1995-12-27 | Outokumpu Oy | COOLING DEVICE FOR A TURN TUBE |
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