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use of dolomite on dephosphorization steel

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Dolomite – Ceramic Action

Dolomite as a ceramic material is a uniform calcium magnesium carbonate. In ceramic glazes it is used as a source of magnesia and calcia. Other than talc, dolomite is the principle source of MgO in high temperature raw glazes. 'Dolomite matte' stoneware glazes, for example, are highly prized for their pleasant 'silky' surface texture.

Study On Slagging With Dolomite In Converter Steelmaking

In recent years,because of the overcapacity and the low profitability of steel,the iron and steel industry overall depressed.To reduce the cost of production became an important task.Slag-forming mate... Font Size: a A A. ... Dolomite, Slagging, Dephosphorization, Double slag and slag-remaining process:

(PDF) Feasibility Study of Dephosphorization of Slag ...

Feasibility Study of Dephosphorization of Slag Generated from Basic Oxygen Furnace of an Integrated Steel Plant ... 16-20%) and lime content (CaO: 45 …

Double Slag Operation Dephosphorization in BOF for ...

The use of double converters is associated with considerable high cost. Phosphorus can also be removed from steel after converter processing to obtain the ultra-low phosBiography:TIAN Zhi-hong(l979-), , Doctor; phorus steel[7-11). However, the dephosphorization treatment must be carried out before deoxidation and alloying.

How can we decrease the phosphorus content of low carbon ...

Answer (1 of 4): The main source of phosphorous in induction furnace is sponge iron and cast iron; the quality of which is directly related to quality of iron ore.The presence of phosphorous in steel is detrimental to its quality and therefore required to be maintained below a specified amount. ...

Dephosphorization by Double-Slag Process in Converter ...

Dephosphorization by Double-Slag Process in Converter Steelmaking. The double-slag converter steelmaking process can smelt low- and ultra-low-phosphorus steel and reduce lime and dolomite consumption and the amount of final slag simultaneously. Industrial steelmaking tests on a 150-metric ton converter at the Tangsteel Company were carried out ...

Dephosphorization | Article about Dephosphorization by The ...

Dephosphorization. a set of physicochemical processes that facilitate the removal of phosphorus from a metal (cast iron or steel) during smelting. It is usually achieved by oxidizing the phosphorus to its pentoxide, P 2 O 5, which passes into the slag, where it is permanently fixed as …

Dololime - Saudi Lime

Dololime is mainly produced through the heating of Dolomite rocks. The process may entail some selected special sizes that undergo high temperature ranging between 900°C & 1100°C in specialized Kilns. Ca, Mg (C03)2 + HEAT → CaO, MgO + CO2. In this process, Calcium Carbonate and Magnesium Carbonate will get disintegrated, and then turned ...

Dephosphorization ofStainless Steels

Test data on the use of Ca-CaF2 and CaC2-CaF2 fluxes are shown, and the importance ofthe post-treatmentof spent fluxes is pointed out for environmental reasons. Any dephosphorization step must satisfy the requirements of present processes For the production of stainless steel in terms of the carbon and chromium contents. The

For Alcoy town in Cebu, dolomite is life | Inquirer News

Dolomite, a sedimentary carbonate rock, is generally used as an auxiliary material for iron and steel; sintering agent and flux in metal processing; ingredient in the production of glass, bricks ...

"DEPHOSPHORIZATION OF STEEL PRODUCED FROM …

scale of steel formed through secondary route is alloy steel and plain carbon steel. [2] In the present work, our objective is to set up preliminary info for dephosphorization of steel in 150 kg induction furnace. As for the expulsion of phosphorous basic environment is desirable,

Dolomite - Digitalfire

Notes. Dolomite as a ceramic material is a uniform calcium magnesium carbonate. In ceramic glazes it is used as a source of magnesia and calcia. Other than talc, dolomite is the principle source of MgO in high temperature raw glazes. 'Dolomite matte' stoneware glazes, for example, are highly prized for their pleasant 'silky' surface texture. Dolomite by itself is refractory, but when combined ...

Investigation on Different Melting Parameters Effect on ...

steel temperature is about 1650 C, and its initial composition in wt pct is [C] 0.50 to 1.10, [Si] 0.02 to 0.10, [Mn] 0.2 to 1.0, and [Cr] 11.0 to 26.0. Fluxes such as dolomite and lime and some alloys such as Fe-Si and Fe-Cr are added according to the steel composition and grade. The bottom stirring argon flow rate is 100 N lit/min. 2.2.

Prediction model of end-point phosphorus content for BOF ...

According to the analysis in Sect. 2, the addition of dolomite is beneficial to dephosphorization. The heat of molten steel mainly comes from the heat of hot metal and the heat of oxidation of C, Si, and other elements. The dephosphorization reaction is an exothermic reaction, and therefore, high temperature is not conducive to dephosphorization.

Tetsu-to-Hagané | Steel Science Portal

Dephosphorization of molten carbon saturated iron with CaO-FeCl 2 flux was investigated in a laboratory scale test. By using CaO-FeCl 2 flux of 100 kg/t, 90% dephosphorization is possible together with desulphurization of 8090% when the molten carbon saturated iron has silicon, manganese and chromium content less than 0.05%, respectively. In a graphite crucible test, dephosphorization of …

journals on dephosphorization of iron ore

use of dolomite on dephosphorization steel – Grinding Mill China. Jun 26, 1984 · (ii) The pig iron dephosphorization, i.e., hot metal dephosphorization is a process in ... dephosphorization … raw materials ore, lump ore, ...

(PDF) STEELUNIVERSITY – BASIC OXYGEN STEELMAKING ...

STEELUNIVERSITY – BASIC OXYGEN STEELMAKING SIMULATION version 1.00 User Guide

RESEARCHES CONCERNING DEPHOSPHORIZATION …

electric furnace, EBT, steel, phosphor content, dephosphorization process. 1. INTRODUCTION . The reduction content of phosphor content from steel it was and will remain a concern of steel makers, indifferent of steel processing method. In Romanian steel industry are operating four main producers of

LIME AND DOLOMITE FOR THE STEEL INDUSTRY

Dolomite is also needed to protect the refractory lining of the steel furnace or converter, increasing the life span – a crucial parameter from a financial viewpoint. SMA Mineral can supply both types of high quality alkaline flux, for every type of steel manu-facturer, including carbon steel producers and those that manufacture stainless steel.

Production of low phosphorus steels from high phosphorus ...

While dephosphorization of hot metal is theoretically ruled out in the Indian context, dephosphorization of liquid steel can also not be considered because of its adverse effect on ladle refractories and steel cleanliness. ... Dolomite 10 0.090 0-009 0-32 Assumptions: …

Parameters Affecting Dephosphorization of Stainless Steel

process of making stainless steel, cheaper scrap metal with higher phosphorus content would lower the costs. Although there is no deliberate focus on dephosphorization in 's steel production, the dephosphorization process is taking place in the interface between the slag and the melt. [3].

Dolomite powder - Application of Dolomite

Dolomite is a double carbonate of calcium and magnesium (CaC03, MgC03). It is one of the important raw material used in iron & steel, ferroalloys, glass, alloy steels, fertilizer industry etc. Dolomite chips are also used in flooring tiles. 1. The present status of specifications of dolomite for different end use industries and the likely ...

Metals | Free Full-Text | Dephosphorization in Double Slag ...

At the dephosphorization temperature range of 1385–1410 °C, the dephosphorization ratio is higher than 55%, the P2O5 content in the dephosphorization slag is 3.93–4.17%, the logLP value is 1.76–2.09, the value of PCOP-C of the selective oxidation reaction of carbon and phosphorus is 53–80 Pa, and the aFeO value is 0.284–0.312.

Development for the production of low phosphorus steel in

process of steel dephosphorization in BOF converters. Arcelor Mittal Tubarão (AMT), located in the municipality of Serra, Brazil, currently produces 5 million t of steel, but has an installed capacity of 7.5 million. This work aims at showing the development carried out in the dephosphorization of silicon-aluminium killed steel produced in the

Dolomite Mineral | Uses and Properties

Dolomite is a common rock-forming mineral. It is a calcium magnesium carbonate with a chemical composition of CaMg (CO 3) 2. It is the primary component of the sedimentary rock known as dolostone and the metamorphic rock known as dolomitic marble. Limestone that contains some dolomite is known as dolomitic limestone.

System assessment of recycling of steel slag in converter ...

1. Introduction. Integrated steel plants utilize large amounts of slag former such as lime and dolomite to produce steel. During the production of steel, 2–4 t of wastes are being generated per tonne of steel produced (Das et al., 2007).The various solids wastes exist in the form of slags, sludges, dusts, mill scales, etc. Amongst the numerous solid wastes, steel slag is a byproduct of ...

China Magnesia Dolomite Brick manufacturers and suppliers ...

Magnesia dolomite bricks have strong resistance to low iron and low alkalinity refining slag outside the furnace, and are beneficial to desulfurization and dephosphorization to remove impurities in steel, and have the effect of purifying molten steel.

Feasibility Study of Dephosphorization of Slag Generated ...

Basic oxygen furnace slag (BOF slag) is an unavoidable by-product of steelmaking process of basic oxygen furnace. The main chemical constituents of BOF slag are CaO, FeO, Al 2 O 3, SiO 2 and MgO. Due to its high metallic value (FeO: 16-20%) and lime content (CaO: 45-50%), it is possible to use in iron making and steelmaking process to replace lime and recover iron and CaO.

Optimization of Dephosphorization Parameter in Consteel ...

The proper process parameter of dephosphorization is a key problem in actual steelmaking production. This article presents a rule set model combining a k‐means method and a decision tree model, which can extract the rule set from the actual production data to optimize the dephosphorization process.

Dolomite mining not meant for Manila Bay project: Cebu ...

The minerals are used as auxiliary materials for iron and steel, plate glass for construction materials, automotive glass, fertilizer, and soil conditioner. However, the PMSC is accommodating local orders of aggregates to support construction projects and agricultural farms in Mindanao that use dolomite as soil enhancers or neutralizer to ...