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Mechanical navajoite roasting shaft kiln and roasting method

A technology for roasting and vanadium ore, which is applied in the field of vanadium ore smelting, can solve the problems of high production cost, waste of shaft kiln resources, non-compliance with energy saving and emission reduction requirements, etc., and achieves the effects of low operating cost, energy saving and resource utilization improvement.

Active Publication Date: 2013-06-12
LAOHEKOU LVHUA ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a mechanized vanadium ore roasting vertical kiln and roasting method, to solve the technical problems of traditional vertical kiln with large waste of resources, high production cost, and failure to meet the requirements of energy saving and emission reduction

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  • Mechanical navajoite roasting shaft kiln and roasting method
  • Mechanical navajoite roasting shaft kiln and roasting method

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Embodiment Construction

[0026] Examples see figure 1 , figure 2 As shown, this mechanized vanadium ore roasting shaft kiln includes a vertical kiln body 2 and a temperature monitoring system 17 for monitoring the kiln body 2. The top of the kiln body 2 is provided with a flue gas channel 1, and the flue gas channel 1 Connected with the induced draft fan 12, the temperature monitoring system 17 feeds back the temperature in the kiln body through sensors installed in various parts of the kiln body, and controls the wind speed and pressure of the induced draft fan 12 and the blower 19 to maintain a suitable firing temperature in the kiln.

[0027] The bottom of the kiln body 2 is provided with a discharge system 5 , an unloader 4 is provided above the discharge system 5 , and the inside of the kiln body between the unloader 4 and the discharge system 5 is a cooling chamber 11 . The unloading machine 4 is used to unload the roasted material in the roasting and heat preservation chamber into the cooling...

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Abstract

The invention discloses a mechanical navajoite roasting shaft kiln and a roasting method. The roasting shaft kiln comprises a vertical kiln body and a temperature monitoring system used for monitoring the kiln body, wherein the bottom of the kiln body is provided with a discharging system; an unloader is arranged above the discharging system; a cooling chamber is arranged in the kiln body between the unloader and the discharging system; the kiln body above the unloader is provided with a material distribution machine rail and a material distribution machine moving along the material distribution machine rail; a roasting thermal-insulation chamber is arranged in the kiln body between the material distribution machine and the unloader; an air preheating cavity is arranged in the kiln body wall around the roasting thermal-insulation chamber and the cooling chamber; the air preheating cavity is communicated with the roasting thermal-insulation chamber via a preheated air outlet; and the air preheating cavity is also communicated with an air blower via a blast pipe. The roasting shaft kiln is a mechanical shaft kiln without an external heating source, a navajoite ball is roasted by the self heat of the stone coal navajoite, a great quantity of energy is saved, and the problems of high production cost, big resource waste and big tail gas discharge of the shaft kiln with the external heat source are solved.

Description

technical field [0001] The invention relates to the technical field of vanadium ore smelting, in particular to a kiln for oxidizing and roasting vanadium ore and a roasting method using the kiln. Background technique [0002] Vanadium is an important strategic resource. Adding vanadium as a microalloying element to metals such as steel can improve the strength, hardness and wear resistance of steel. It is one of the indispensable elements in the development of new microalloying steel. Widely used in metallurgy, chemical industry, new energy and other fields, the development of vanadium-bearing stone coal mineral resources has great economic and social significance. [0003] In the vanadium extraction process, the vanadium ore should be oxidized and roasted in the oxidation roaster kiln. The traditional oxidation roasting furnace is usually a flat kiln or a vertical kiln with an external heating source. The flat kiln is not environmentally friendly, and the conversion rate o...

Claims

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Application Information

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IPC IPC(8): C22B1/04C22B34/22F27B1/00
Inventor 侯作义张衍林周万明董鑫
Owner LAOHEKOU LVHUA ENVIRONMENTAL PROTECTION TECH
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