Pneumoelectric kiln for producing basalt continuous fibers

Abstract

The invention provides a pneumoelectric kiln for producing basalt continuous fibers. A cavity in a furnace body includes a melting zone, a clarifying zone, a homogenizing zone and an operating zone; the wall, positioned below the designed height of the upper light level of a melt in the kiln, of the lateral wall of each of the melting zone, the clarifying zone, the homogenizing zone and the operating zone is provided with at least one pair of electrodes, and the wall, positioned above the designed height of the upper liquid level of the melt in the kiln is provided with a natural gas lance. Energized electrodes are immersed in the basalt melt to realize internal heating, the natural gas lances heat the electrodes above the basalt melt to realize external radiation heating, and the internal heating and the external radiation heating are combined to form internal and external co-heating, so the thermal field in the kiln is uniform, and the melting rate of basalt rocks is improved to make the temperature and the components of the basalt melt uniform, thereby the productivity and the quality of the basalt continuous fibers produced by a single kiln are improved, and the large-scale industrial production of the basalt continuous fibers is facilitated.

Description

technical field [0001] The invention relates to the technical field of basalt continuous fiber production equipment, in particular to a gas-electric kiln for producing basalt continuous fiber. Background technique [0002] Continuous basalt fiber (CBF for short) is an emerging environment-friendly inorganic fiber material, which has excellent properties such as light weight, high strength, high temperature resistance, acid and alkali corrosion resistance, heat insulation and sound insulation, etc. Wide application, broad market prospect. [0003] Today, the production process of basalt continuous fiber is roughly as follows: natural basalt rock is used as the raw material for the production of basalt continuous fiber, and it is put into the kiln by the feeder, and is melted into liquid by the high temperature environment in the kiln, and the liquid is further clarified and homogenized. The scum layer, basalt melt, and sediment layer are distributed from top to bottom, and t...

AI Technical Summary

Problems solved by technology

[0005] Because the basalt rock contains a large amount of iron oxide, the blackness coefficient is high, and the thermal conductivity is poor. Electric heating belongs to internal heating, which leads to the uneven thermal field in the kiln, which makes the melting rate of the basalt rock low and the basalt melt in the kiln. The temperature and composition are not uniform, which seriously affects the production capacity and quality of basalt continuous fiber produced by a single kiln. It is impossible to realize the large-scale industrial production of basalt continuous fiber, and it is impossible to meet the demand for basalt continuous fiber in various fields of society.

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