temperature for calcining dolomite

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Calcination of Limestone IspatGuru

The temperature required for the decomposition of dolomite and dolomitic limestone is usually in the range of 500 deg C to 750 deg C. The smaller size limestone is more suitable for calcination in rotary kilns and it allows optimum residence time. The lower calcining temperature also allows less fuel consumption.

Calcination Wikipedia

Calcination refers to heating thermal treatment of a solid chemical compound e.g. carbonate ores to high temperatures in absence or limited supply air or oxygen O 2 generally for the purpose of removing impurities or volatile substances and/or to incur thermal decomposition.

Properties and mechanism of the compound MgO expansive agent

When the calcining temperature reaches 950 the dehydration and decomposition of dolomite and serpentine has already begun but the reaction between them rarely happens. Under 1370 all of the composites in the CMEA system present as solid phase 14 so the reaction between dolomite and serpentine is based on the contact of solid phase.

Dolomite Its Processing and Appli ion in Iron and Steel

In principal calcining at higher temperatures reduces the retention time needed. However too high temperatures adversely affect the reactivity of the product. The relation between calcining temperature and retention time needed for different sizes of dolomite is shown in Tab 1.

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A method for calcining dolomite in which the pressure of carbon dioxide is controlled is described. Less than of one per cent of lime is liberated. Material was calcined in ton lots using external heating. Two types of retort were used: wrought iron and fire clay.

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Waste Heat Recycling and Utilization of HighTemperature Flue

Waste Heat Recycling and Utilization of HighTemperature Flue Gas from Dolomite Calcining Publi ion date: 20161101 16:53 article source: ZK Corp viewed: The dolomite calcination is one of the main part in the production of metal magnesium by silicon thermal process and dolomite calcining kiln is a kind of important magnesium production

Calcined Dolomite digitalfire.com

Notes. Deadburned dolomite is produced when dolomite is calcined at very high temperatures. It is used both as a refractory product in granular form to repair linings and for making the bricks used in the refractory linings of casting ladles and cement kilns.

The heat treatment of dolomite. III. The precipitation of

Samples of dolime have been prepared by calcining dolomite at a series of temperatures between 700 and 1480 they were then slaked at 95 and the slurry added to seawater to precipitate magnesium hydroxide.

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