Basalt fiber melting tank furnace

Abstract

The invention discloses a basalt fiber melting tank furnace. The tank furnace comprises a furnace, wherein the furnace comprises a melting zone and a clarification zone which are mutually communicated, and a feeding port is formed in one side, away from the clarification zone, of the melting zone; combustion heaters are arranged at the top and / or on the side wall of the melting zone, and upwards bulging columnar electrodes are arranged at the bottom of the melting zone; a discharging port is formed in one side, away from the melting zone, of the clarification zone, and a bubbling device is arranged at the bottom of the clarification zone. The combustion heaters and the columnar electrodes are combined and arranged in the melting zone of the tank furnace to heat molten basalt from differentpositions, so that the molten basalt can be fully heated, and the consistency of the temperature of basalt in the tank furnace is guaranteed.

Description

technical field [0001] The invention relates to the field of basalt fiber processing, in particular to a basalt fiber melting tank kiln. Background technique [0002] Basalt fiber is an inorganic high-performance fiber formed by melting basalt ore at a high temperature of 1450-1500 °C, drawing it through a bushing plate and then cooling it. Basalt fiber has excellent properties such as high and low temperature resistance, low thermal conductivity, strong moisture absorption, corrosion resistance, radiation resistance, high tensile strength, and high elastic modulus, and has a wide range of application prospects. [0003] However, due to the high viscosity temperature and narrow temperature range of basalt suitable for wire drawing, and basalt has a very high crystallization temperature and poor thermal conductivity, the temperature difference between basalts in different areas of the kiln is large and difficult to control. This makes molten basalt that does not meet the dra...

AI Technical Summary

Problems solved by technology

[0003] However, due to the high viscosity temperature and narrow temperature range of basalt suitable for wire drawing, and basalt has a very high crystallization temperature and poor thermal conductivity, the temperature difference between basalts in different areas of the kiln is large and difficult to control

This will cause molten basalt that does not meet the drawing temperature requirements to enter the bushing for drawing, resulting in many broken ends and flying filaments and low fiber yield in the production process of basalt fiber, which increases the cost and energy consumption.

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