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Process for burning of particulate mineral solids

A granular and mineral material technology, which is applied in the direction of combustion methods, combustion chambers, combustion equipment, etc., can solve the problems of large space occupation, complicated technology, and difficulty in accurately measuring and evenly loading combustion mineral materials.

Active Publication Date: 2005-07-20
MAERZ OFENBAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition to the disadvantages of a large space occupation and technical complexity, the locking system also has the disadvantage that it at least makes it difficult or impossible to precisely meter the combustion charge and evenly load the furnace chamber

Method used

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  • Process for burning of particulate mineral solids
  • Process for burning of particulate mineral solids

Examples

Experimental program
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Embodiment Construction

[0011] It is known that granulated combustion minerals with a lumpiness of, for example, between 40 mm and 80 mm are fed in batches into the two chambers 1 and 2 of the shaft furnace 3 , as indicated by arrows 4 and 5 . The air required for combustion is also supplied from above, indicated by the arrow 6; as indicated by the arrow 7, the fuel is supplied through the combustion nozzle 9 arranged vertically in the preheating area 8, and periodically alternately leads to one of the furnace chambers 1 or 2. Furthermore, cooling air is continuously supplied from the bottom discharge areas 10, 11 of the two furnace chambers 1, 2, as indicated by arrows 12, 13, so that the burnt products are cooled after passing through the cooling area 14, following arrow 15 The direction shown in , 16 is sent out continuously through a controlled discharge device 24 .

[0012] The heating of the granulated combustion minerals in the preheating zone 8 of the combustion furnace chamber 1 takes place...

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Abstract

The invention relates to a method for burning a granular mineral material in a parallel shaft furnace (3), especially for burning limestone or dolomite. The parallel shaft furnace (3) has at least two furnace chamber (1,2) connected by an over flow channel (19) and carries on works by a burning furnace chamber making the flow reversed alternatively and a reflux type exhaust gas furnace chamber. In order to carry on the operation of supporting the burning mineral material out of the operation of a time-consuming flow reversed, in the operation of supporting the burning mineral material, the pressure is zero in the chamber, the exhaust gases are quickly drawn off by high-power, and so the pressure near the filling opening (37) is reduced to atmospheric pressure and the exhaust gases are prevented from flowing via the filling opening. Thus, the granular firing mineral material can be provided repeatedly in one burning period, so that the temperature of the exhaust gases rises slowly, the burning time is longer, and the corresponding efficiency of the furnace is also higher.

Description

technical field [0001] The invention relates to a method for burning granulated minerals, in particular limestone or dolomite, in a shaft furnace having at least two chambers connected to each other by an overflow duct, which are fed periodically with fuel and combustion air respectively into a furnace chamber, alternately forming a combustion furnace chamber and an exhaust gas furnace chamber, the supply of granular combustion ore and combustion air at the top is spatially separated from each other and periodically alternately leads to the corresponding one In the furnace chamber, the burnt ore is discharged at the bottom end of the furnace chamber, wherein the exhaust gas is introduced from the combustion furnace chamber through the overflow pipe into the exhaust gas furnace chamber, after flowing through an upper preheating area in the exhaust gas furnace chamber, Exhaust gases are discharged cooled at the top and drawn off by means of an external filtering device, wherein ...

Claims

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Application Information

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IPC IPC(8): C04B2/12F27B1/02F27B1/20F27B1/21F27B1/24
CPCF27B1/20F27B1/24F27B1/02F27B1/21C04B2/12
Inventor 汉内斯·皮林格
Owner MAERZ OFENBAU