Basalt fiber flame kiln consumes high energy, how to save energy

Basalt fiber flame kiln melting characteristics result in low yield and high energy consumption, it is necessary to take relevant energy-saving measures.
1. The use of pure oxygen combustion to increase the flame space temperature, and increase the radiation heat to the melt.
The flame has the ability to radiate the composition is mainly H2O, CO2, and a variety of suspended solid particles.
(1) The melt selectively absorbs radiant energy. By increasing carbon to improve the blackness value of the flame, the flame space can be increased to the glass liquid radiation heat.
(2) Fully sealed design of the kiln to reduce the kiln outside the cold air into the kiln, to prevent the formation of “cold air” film near the liquid surface. In addition, it can also reduce the emission of nitrogen oxides.
(3) By reducing the height between the flame and the liquid surface, the flame is heated close to the liquid surface. This improves heating efficiency and heats the melt quickly. Or use the top burning, and let the flame directly to the liquid surface heating, more can improve the heating efficiency of the flame on the melt.

2. Increase the melt temperature in the kiln pool.
The use of a shallow liquid surface can improve the uniformity of the melt temperature in the direction of the depth of the pool. Measures taken are.
(1) the bottom of the pool bubble, increases mechanical convection, and the bottom of the cold melts to the surface heating.
(2) Appropriate use of electric flux heating to improve the internal heat capacity of the melt. Reduce the relative heat loss, and improve the melting rate.

3. Forced homogenization to improve melting rate and reduce unit consumption.
Homogenization is the key process that affects whether the fiber drawing is stable. Although the Basalt melt itself can be understood as “clinker”, but because of its formation of complex conditions, resulting in different internal crystalline structures, in the melting, the need for secondary homogenization to make the melt composition stable, to ensure the stability of the drawing process.
At the same time, the heat permeability of basalt melts and the kiln to the surrounding heat dissipation caused by the uneven temperature. Relying on natural diffusion to homogenization alone cannot meet the requirements. It is necessary to take the measures of forced homogenization. Currently, effective measures are the bottom of the pool bubbling, material channel mixing, pool bottom discharge, internal electric heating, and so on.

4. Reduce heat loss
(1) First of all, we must reduce the kiln surface heat dissipation, orifice radiation heat, orifice and brick seams to take away the heat of the escaping gas. Measures taken are.
① kiln body heat preservation. Kiln body insulation to ensure the overall life of the kiln under the premise of improving the insulation effect. Especially in the flame space parts, the current kiln space selected high-quality erosion-resistant refractory materials, so that the outer wall can be forced insulation, and the outer surface temperature controlled below 50 ℃, greatly reducing the kiln surface heat dissipation.
② Sealing of holes and brick joints. Pay attention to the charging mouth, temperature measurement holes, observation holes, and other places sealed. The charging machine is a fully enclosed type, the space thermocouple adopts a platinum casing structure, and an industrial TV is used to observe the flame and Chemical material.
(2) Reduce the heat of repeated heating. Mainly to reduce the reflux of glass liquid repeat heating heat consumption. Measures taken to set up the kiln, liquid hole sinking, properly reduce the height of the liquid hole, properly reduce the liquid hole into the liquid temperature of the liquid glass, and so on.

5. Utilization of available heat
(1) The fuel should be fully combusted to release all the heat.
(2) flue gas waste heat utilization. The heat carried by the flue gas discharged from the flue in the permissible conditions should be exhausted modeling collection. Waste heat recovery is provided in the flue system, which can be used for gas preheating, raw material preheating, etc.