Temperature-controlled suspension roaster

A suspension roasting furnace and cooler technology, applied in lime production and other directions, can solve the problems of high heat consumption and increase product cost in magnesia production, and achieve the effects of good calcination effect, small footprint and low operation and maintenance costs.

Active Publication Date: 2013-07-10
TIANJIN CEMENT IND DESIGN & RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using traditional kiln-type calcined magnesite, the exhaust gas will take away a lot of heat, resulting in high heat consumption of magnesia production and increasing product cost

Method used

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  • Temperature-controlled suspension roaster

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Embodiment Construction

[0020] In order to further understand the utility model content, characteristics and effects of this patent, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0021] see figure 1 , in the figure, the solid line plus the arrow indicates the flow direction of the solid material, the double-dot dash line plus the arrow indicates the flow direction of the dusty gas, and the dotted line indicates the flow direction of the waste gas.

[0022] A temperature-controllable suspension roaster is composed of a cyclone separator, a preheating cyclone cylinder 4, a temperature-controllable roaster 5, a dryer 1, and a multi-stage cyclone cooler, wherein the cyclone separator includes a two-stage cyclone separator, which is The primary cyclone separator 2 and the secondary cyclone separator 3. The multi-stage cooler includes a primary cooler, an intermediate cooler and a final cooler from the upstream to the downstream ...

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Abstract

The invention relates to a temperature-controlled suspension roaster. The temperature-controlled suspension roaster comprises a cyclone separator, a preheating cyclone drum, a temperature-controlled roaster, a drier and a multistage cyclone cooler, wherein the cyclone separator is a two-stage cyclone separator which comprises a first-stage cyclone separator and a secondary cyclone separator, and the multistage cyclone cooler sequentially comprises a first-stage cooler, a middle-stage cooler and a final-stage cooler from the upstream to the upstream of the running path of material. The temperature-controlled suspension roaster has the advantages that the process arrangement is simple, the occupied land is small, and the operation and maintenance expenses are low; the roasting effect is good, the decomposition efficiency of magnesium carbonate is high, and magnesium oxide products with different purities can be obtained by changing calcination temperature; magnesite powder is dried and preheated by using discharged waste gas, the heat of high-temperature waste flue gas is fully recycled, and the heat efficiency of the roaster is improved; and the four-stage cyclone cooler has a good cooling effect and can be used for cooling a finished product magnesium oxide to be below 100 DEG C so that caloric content of magnesium oxide can be fully recovered for disintegrating magnesite and the energy consumption of the roaster can be reduced.

Description

technical field [0001] This patent belongs to the technical field of inorganic non-metallic material manufacturing, and in particular relates to a temperature-controllable magnesium oxide suspension roasting furnace. Background technique [0002] my country is one of the countries with the most abundant magnesite resources in the world. The proven magnesite reserves reach 3.564 billion tons, accounting for 28.7% of the world's total reserves, ranking first in the world. Therefore, the production of magnesia in my country is mainly based on calcined magnesite, light-burned magnesia is mainly calcined by reverberatory kiln, rotary kiln or fluidized bed furnace, and heavy-burned magnesia is calcined by shaft furnace. [0003] In the traditional process of calcining magnesite to produce magnesium oxide, whether it is a reverberatory kiln, a rotary kiln, or a shaft furnace, there are problems of high energy consumption, low product purity, serious environmental pollution, and low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/10
CPCY02P40/40
Inventor 陶从喜董蕊孙于龙
Owner TIANJIN CEMENT IND DESIGN & RES INST
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