Method for directly manufacturing mineral wool by smelting yellow phosphorus slags

A yellow phosphorus slag, direct technology, applied in the direction of manufacturing tools, glass manufacturing equipment, etc., can solve the problems of easy pulverization, poor water resistance, unstable fibers, etc.

Inactive Publication Date: 2010-06-30
武汉凌派化工科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

It is known that mineral wool with a pH>7 is the most unstable fiber, has poor water resistance, and is easy to pulverize when exposed to humid air, especially at 550-600°C, which is easy to crystallize and produce coarse feldspar crystals, which destroy the fiber structure and pulverize. Therefore, this product has no practical value

Method used

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  • Method for directly manufacturing mineral wool by smelting yellow phosphorus slags
  • Method for directly manufacturing mineral wool by smelting yellow phosphorus slags
  • Method for directly manufacturing mineral wool by smelting yellow phosphorus slags

Examples

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Embodiment 1

[0011] The electric furnace power of a domestic yellow phosphorus factory is 1500KVA. The composition of molten slag is shown in Table-1 (sampling and analysis after cooling).

[0012] Table-1 yellow phosphorus slag chemical composition weight (%)

[0013]

[0014] Near the slag outlet, add bauxite powder, clay powder and silica powder at a constant speed, and the mixture flows into a rectangular homogenized electric furnace, inserting three 200×40 mm pure iron rod electrodes in the furnace, and the heating material is controlled by a voltage regulating transformer When the temperature reaches 1400±50°C, the electrode consumption is continuously inserted and replenished. Two water-cooled corundum stirrers are installed at the front 1 / 3 of the furnace to homogenize the melt components. The bottom of the discharge port of the electric furnace is aligned with the entrance of the four-roller centrifuge, and the mineral wool is made by centrifugal spinning, and the slag balls a...

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Abstract

The invention provides a method for directly manufacturing mineral wool by smelting yellow phosphorus slags. In the method, a material charger for charging mineral powder rich in Al2O3 and SiO2 and an electro-thermal homogenizing furnace are additionally arranged near a slag discharging opening of the yellow phosphorus slags; the mineral powder rich in Al2O3 and SiO2 is added to adjust the composition of a melting material to be within the range of the acidity coefficient of the mineral wool, namely Mk=1.2-2.6; the yellow phosphorus slags and the powder are homogenized by the electro-thermal homogenizing furnace, are processed into wool through spray blowing or by a four-roller centrifugal machine, and are then processed into products such as a wool slab, a wool pipe shell, granular wool and the like.

Description

technical field [0001] The invention belongs to the category of inorganic materials for converting yellow phosphorus slag into mineral wool and its processing technology. Background technique [0002] Electric furnace yellow phosphorus is a high-quality chemical raw material. It has a wide range of uses that cannot be replaced in the inorganic, especially organic phosphorus chemical industry. As many as 10 tons of molten slag at 1400°C are discharged, causing environmental pollution. At present, domestic and foreign yellow phosphorus factories all quench their molten slag into granulated slag for long-term storage. Some of them are used as raw materials for silicon fertilizer, cement and unburned bricks, and the value is only 100-200 yuan / ton at most. In fact, according to the composition theory, the composition of this kind of slag is close to the composition range of mineral wool. As we all know, mineral wool is a kind of thermal insulation material, which is widely used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/00C03C13/06
CPCC03C13/00C03C3/087C03C3/097
Inventor 姚鼎文姚宁
Owner 武汉凌派化工科技有限公司
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