The original glaze of the tile changed during the re-burning of the small kiln. However, the kiln uses liquefied petroleum gas and is quite clean. The clarity of the kiln is acceptable, but it is not ideal. The dust outside the kiln is visible through the sunlight. The fan platform and the fan on the top of the kiln accumulate more dust. The key is that the air inlet of the fan shared by the combustion air and the quenching wind does not have any filtering device. The outside air directly enters the kiln through the fan through the burner. The frame-shaped filter net was made by the mesh stainless steel mesh and placed in the air inlet of the ventilator. It was observed that the fan was hit when it was put on, the dust on the fan was raised, and the space inside the kiln was immediately fouled. After the frame was placed, the kiln was placed. The inside is gradually clear; according to the time calculation, when the soil becomes dusty, the brick in the firing zone is more glossy and the hand feels more rough; after one cycle, the brick surface gloss is basically equivalent to the original porcelain gloss, and the effect is satisfactory.
Through this adjustment, it is not difficult to see that because the glaze of the original porcelain sheet has light, the initial melting point is low, and the high temperature is burned when the frit is burned, and the glaze of the surface is melted. After the unclean air in the kiln, the smoke scouring the glaze, the glaze is sticky, so it sticks to the dust particles in some air, and the quenching is not enough clean air, directly rushing to the glaze, the glaze is still at this time. In the liquid phase, and the temperature of this section is low, the glaze adheres to the dust and solidifies and cools out of the kiln. Therefore, the waistline of the flower is lower than that of the original porcelain sheet, and the smoothness is poor.
The smoothing temperature of the polished glaze of the ceramic sheet is usually lower than the temperature of the matte matte glaze. In the ceramic sheet, the combustion air, the atomizing wind and the quenching air are filtered, which mainly affects the smoothness of the matte matte brick. However, it has a greater impact on the gloss of light bricks. Due to the large output of the ceramic tile, the large furnace and the power of the fan are also large, the filtration requirements are more strict. It is not advisable to directly attach the stainless steel mesh to the suction port to prevent the suction fan from causing danger. In the combustion air and quenching fan, a suction net cover is arranged, and the net cover can be moved in the whole, and the net cover itself is covered into the air inlet of the fan, and the movable side is removed to replace the cleaning mesh.
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