Reduction oxidation furnace for refining phosphorus by hot method

A technology of oxidation furnace and thermal method, which is used in the preparation of phosphorus, furnaces, vertical furnaces, etc., can solve problems such as complicated operation and difficult sealing, and achieve the effect of low particle size requirements, less impurity components, and improved purity.

Active Publication Date: 2010-02-17
CHINA ENFI ENGINEERING CORPORATION +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0009] Since there is a flux inlet on the top of the reduction and oxidation furnace, it needs to be opened and sealed continuously during use, the operation is complicated and the sealing is difficult

Method used

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  • Reduction oxidation furnace for refining phosphorus by hot method
  • Reduction oxidation furnace for refining phosphorus by hot method
  • Reduction oxidation furnace for refining phosphorus by hot method

Examples

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Embodiment Construction

[0032] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention.

[0033] figure 1 It is a schematic diagram of a reduction and oxidation furnace for thermal phosphorus smelting according to an embodiment of the present invention, which shows a melting furnace connected to it for melting phosphate rock into a melt. figure 2 for figure 1 A schematic cross-sectional view of an example of the melting furnace in. image 3 for figure 1 A schematic cross-sectional view of the reduction oxidation furnace for thermal phosphorus smelting in China.

[0034] Such as Figure 1-3 ...

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Abstract

The invention discloses a reduction oxidation furnace for refining phosphorus by a hot method, which comprises a furnace body and a blow gun, wherein the furnace body is provided with a slag outlet, a smoke outlet and a fusant inlet for adding molten phosphorus into the furnace; and one end of the blow gun is inserted in the furnace body. According to the reduction oxidation furnace for refining phosphorus by a hot method, impurities in flue gas containing phosphorus pentoxide are reduced, and the phosphorus pentoxide with high purity can be simply extracted at low cost.

Description

Technical field [0001] The invention belongs to the field of metallurgical equipment, and in particular relates to a reduction oxidation furnace for thermally smelting phosphorus. Background technique [0002] There are two main methods for smelting phosphorus using phosphate rock: wet method and thermal method (such as electric furnace method, kiln method, etc.). The wet method uses phosphate rock to react with inorganic acid (mainly sulfuric acid) to separate phosphogypsum and impurities Then it is made into crude phosphoric acid; the thermal method is to first heat and reduce the phosphate ore to obtain gaseous elemental phosphorus, and then oxidize and hydrate to obtain phosphoric acid. [0003] The wet method has the characteristics of low energy consumption, but the purity of the obtained phosphoric acid is not enough, and further purification is required; while the thermal method, such as the electric furnace method, has the problems of difficulty in ore melting and high pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B1/00F27B1/10F27B1/21F27B1/20F27B1/12F27D3/16C01B25/02
Inventor 冯晓梅李进李栋李光明张振民王佳才邹建马永强候隽
Owner CHINA ENFI ENGINEERING CORPORATION
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