Silicon control in blast furnace

The control block is crafted as follows: Voltage and Heat Capacity.

Silicon control in blast furnace

Bureau of Mines, U.

Silicon behaviour at the blast furnace process - Open Access Library

Department of the Interior, Washington, DC, M, Part I Specifications, 14th Edition, M, Part I Specification, 14th Edition, Szoke, Ontario Ministry of Transportation to D.

Horvat, National Slag Limited, April 7, Mineral Aggregate Conservation Reuse and Recycling. Letter, April 4,D. Horvat, National Slag Limited to P. Its ability to "lock up" in granular base applications provides good load transfer when placed on weaker subgrade.

The lower compacted unit weight of blast furnace slag aggregates relative to conventional aggregates results in a higher yield greater volume for the same weight.

Additionally, the high insulating value of blast furnace slag granular bases can be used to minimize frost heaving. When ACBFS granular base is placed in poor drainage conditions, or other situations where it may be in extended contact with stagnant or slow moving water, sulfurous, discolored leachate may result.

Although aging delays the discoloration and sulfurous odor problems from ACBFS in contact with water, it does not eliminate them. ACBFS aggregates should be stockpiled for at least 1 month prior to shipping to the project.

This test method has also been adopted by Ohio EPA. ACBFS aggregates should only be used above grade as granular base in the pavement structure and must be adequately separated from water courses to prevent immersion, and should not be used in poorly drained areas or in contact with stagnant or slow moving water.

Blast furnace slag should be crushed and screened to produce a material that satisfies the grading requirements of granular base and subbase specifications, such as AASHTO M The compacted density varies with size and grading of the slag, method of measuring, and bulk specific gravity of the slag.

Allowance for this differential should be considered during design and in specifications in order to ensure equal volume irrespective of the type of aggregate used. ACBFS aggregates display good durability with resistance to freeze-thaw weathering and erosion.

Hardness and Impact Resistance: The hardness of slag as measured by Moh's scale is between 5 and 6, corresponding to durable igneous rock.

For this reason ASTM has deleted this test for slag in its specifications e. ACBFS granular base is free draining and is not frost susceptible. However, greater care is required when handling and stockpiling blast furnace slag aggregates to avoid brittle fracture that can result in excessive fines generation.

Placing and Compacting Procedures should be employed to ensure uniform gradation and layer thickness.


Good uniformity is obtained by combining the coarse and fine aggregates with optimum water for compaction at the blending plant just prior to placing. The material should be graded and placed in a manner that allows free drainage and prevents ponding within or adjacent to the material.

MPart I Specifications, 14th Edition, ACBFS, however, is more absorptive than conventional aggregate and therefore has a higher asphalt cement demand.

It also has a lower compacted unit weight than conventional mineral aggregates, which results in a higher asphalt pavement yield greater volume for the same weight.Industrial Blast Furnace is a block added by the GregTech 4 mod.

It is used as a part of Industrial Blast Furnace Multiblock, which is used to smelt some of the metals and several alloys.. Recipe [] Electronic Circuit can be substituted with Integrated Circuit (GregTech 4). Some blast furnaces use a "double bell" system where two "bells" are used to control the entry of raw material into the blast furnace.

The purpose of the two bells is . It cannot be produced in a blast furnace. Steel is iron with to 2% carbon content, and the fuel used in a blast furnace is coke - carbon. What eventually comes out of the tap hole is a eutectic, a mixture of iron and carbon with the lowest melting temperature, which is about 95% iron and 5% carbon.

Comparative performance evaluation of blast furnace furnace. Silicon content in pig iron and hot metal temperature value react in similar ways in the same operation conditions.

Silicon control in blast furnace

This means that if the operators control the hot metal temperature, silicon content is limited to reasonable values. The other ffi criterion, ame temperature.

Apr 28,  · How A Blast Furnace Works The purpose of a blast furnace is to chemically reduce and physically convert iron oxides into liquid iron called "hot metal".

The blast furnace is a huge, steel stack lined with refractory brick, where iron ore, coke and limestone are . Silicon Control in Blast Furnace Essay Blast Furnace # 1 in Bhilai Steel Silicon in hot metal is the optimum for furnace productivity and furnace health.

Plant, India had a typical problem of producing high silicon metal since July

USA - Control of carbon balance in a silicon smelting furnace - Google Patents