Process for making dilation vitrified microbead and rotary floating dilation vitrification furnace

Abstract

The present invention relates to one kind of expanded and vitrified bead and its making process and rotary floating expanding and vitrifying furnace. The rotary floating expanding and vitrifying furnace includes one casing, one furnace body and one pedestal, as well as one sand bin, one sand preheating gas burning pipe, and one or several expanding gas burning pipes. The expanded and vitrified bead is made with vitreous pitchstone, and through preheating, expanding, vitrifying and cooling. The furnace has compact structure, small size and low power consumption; the making process is reliable; and the expanded and vitrified bead has grain size greater than 2 mm and excellent heat insulating effect.

Description

technical field [0001] The invention relates to the production of a high-performance inorganic lightweight heat-insulating material, in particular to a production method of expanded vitrified microbeads and a rotary-floating expansion vitrified furnace. Background technique [0002] With the continuous extension of the application of high-performance inorganic lightweight thermal insulation materials, its incomparable superiority in performance has been reflected in different fields such as industry, agriculture, chemical industry, building materials, metallurgy, and shipbuilding. Performance, a material revolution has been carried out, providing high-quality materials with high cost performance for many application fields. Since the current production process adopts vertical vertical process lines, mineral materials pass through different high temperatures in the furnace in free fall during the expansion and vitrification process. Restricted by the height of the equipment, ...

AI Technical Summary

Problems solved by technology

The particle size of the finished product can only be in the range of 0.3-2mm. For the production of slightly larger particles above 2mm, due to the short high-temperature heat radiation time of the process conditions, the slightly larger particle size is not easy to be penetrated by high-temperature heat radiation, and the cavity surface glass cannot be formed. Characterized granular material

In order to make the 10-40 mesh granular ore get sufficient high-temperature heat radiation, so as to achieve the effect of complete expansion and vitrification, it is necessary to increase the residence time of the ore in different high-temperature radiation areas, so that the ore is heated in the suspension state. The vertical production process is It is not easy to solve the control of the production process, and at the same time, the energy consumption is too large, which does not meet the requirements of energy-saving development

Furthermore, it is difficult for large particle size to expand and transform into spheres. In the molten state of particles, relying solely on falling motion cannot form more regular spherical vitrified particles.

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