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Installation and process for calcining a mineral load containing a carbonate in order to produce a hydraulic binder

A technology of mineral materials and carbonates, which is applied in lighting and heating equipment, cement production, clinker production, etc., and can solve the problems of increasing pollution and emission of substances

Inactive Publication Date: 2007-10-31
TECH FRANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] [15] However, the carbon dioxide input into the restricted area is emitted into the atmosphere, thereby increasing the emissions of pollutants in the atmosphere

Method used

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  • Installation and process for calcining a mineral load containing a carbonate in order to produce a hydraulic binder
  • Installation and process for calcining a mineral load containing a carbonate in order to produce a hydraulic binder
  • Installation and process for calcining a mineral load containing a carbonate in order to produce a hydraulic binder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] [51] The roasting plant 11 of raw mineral materials as shown in Figure 1 includes a "kalsin" binder production device 13 - which is equipped with a fluidized bed combustion combustion chamber 15, and at the same time, a sintering material production device 17 - It is equipped with a combustion converter 19 .

[0052] [52] The device 11 also includes a discharge unit 21 that discharges the combustion smoke into the atmosphere. The discharge unit 21 has a discharge channel 23 that discharges the combustion smoke generated in the fluidized bed combustor 15, and also has a Additional discharge duct 25 - which discharges the combustion fumes generated in the combustion converter 19 .

[0053] [53] Each guideway 23, 25 is equipped with a ventilator 23A, 25A and a ventilator regulating device 23B, 25B, and the ventilator regulating device 23B, 25B is, for example, a vane or a variable speed ventilator for The respective flow rates of the gases circulating in the respective de...

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Abstract

The invention relates to an installation comprising a combustion chamber (15) provided with means (53) which are used to introduce the mineral load and are connected to a pre-heater (27), combustion means (55) for maintaining the chamber (15) at a temperature of between 700 DEG C and 900 DEG C, means (57) for introducing a treatment gas having a controlled carbon dioxide content in order to oppose the dissociation of the carbonate in the chamber (15), and means (61) for removing the calcinated mineral load guided into a cooler (31). The chamber (15) comprises means (51) for forming a fluidised bed. The means (57) for introducing treatment gases are supplied at least partially by a line (91) for deriving part of the combustion flue gases of the chamber (15) emitted by means for discharging (21) said flue gases into the atmosphere. The invention can be used for the production of a cement-type hydraulic binder.

Description

technical field [0001] [01] The present invention relates to a roasting plant for roasting carbonate-containing mineral material to form a hydraulic binder, said roasting plant comprising at least one calciner, said plant successively comprising a preheater, at least one production Calciner for hydraulic binder - it includes a combustion chamber, and a cooler; [0002] [02] The combustion chamber includes: [0003] [03] - input means, which input the mineral material into the combustion chamber and are connected to the preheater; [0004] [04] - Combustion means for maintaining a temperature of 700°C to 900°C in said combustion chamber, said combustion means having an input means for inputting combustion-supporting gas from a cooler into said combustion chamber; [0005] [05] - additional input means, which input process gas with controlled carbon dioxide content into said combustion chamber, for preventing the decomposition of carbonates in said combustion chamber; and [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/10C04B7/42C04B7/44
CPCC04B7/44C04B7/434C04B2/106F27B15/10F27B15/14Y02P40/121Y02P40/40
Inventor J·迪皮伊
Owner TECH FRANCE SA
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