Gas sucking type perforated microsphere expanding equipment

Abstract

The invention provides gas sucking type perforated microsphere expanding equipment. The gas sucking type perforated microsphere expanding equipment comprises a preheating furnace, an elevator, an expanding furnace, an induced draft fan and a product bin, and a feeding port and the elevator are positioned at one end of the expanding furnace. Materials enter the preheating furnace via the feeding port, then are stirred up and down in the preheating furnace and are pushed ahead along the spiral direction. The heated materials enter a storage bin through the elevator, a plurality of guide pipes are arranged on the circumferential face of the bottom face of the storage bin, the materials in the storage bin are fed into corresponding hoppers through the guide pipes, each hopper is provided with a manual flow regulating handle used for controlling the quantity of the materials fed into the expanding furnace, the materials in the hoppers fall along the inner wall of the expanding furnace, the materials in high-temperature areas nearby burners expand rapidly, the expanding size of the expanded materials is 8-15 times of the original size of the materials, microspheres subjected to expansion sintering move from the bottom to the top of the expanding furnace under the action of sucking force of the induced draft fan and are conveyed to the product bin via a conveying pipe, and the hoppers and the burners are the same in number and corresponding in position. The gas sucking type perforated microsphere expanding equipment is high in working efficiency.

Description

technical field [0001] The invention provides a gas suction type perforated puffed bead equipment, which belongs to the technical field of machinery. Background technique [0002] There are two types of puffed bead equipment commonly used in production, one is closed-cell puffed bead equipment, and the other is open-hole puffed bead equipment, which adopts the material free fall method and air-suction vertical drop method, which is suitable for closed-cell puffed bead equipment. Manufactured by microbead processing, the bulk density is 0.2-0.8 g / cm 3 The particle size range is generally between 40 and 180 microns. The processing technology is complex. The mineral raw materials are required to be approximately spherical after spheroidization. The product after puffing and sintering is spherical, with uniform wall thickness and consistent particle size. The range of density change should be small, the compressive strength and flexural strength are high, above 20MPa, the outpu...

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Problems solved by technology

[0002] There are two types of puffed bead equipment commonly used in production, one is closed-cell puffed bead equipment, and the other is open-pore puffed bead equipment. Material free fall method and air suction vertical drop method are suitable for closed-cell microbead processing and production. The bulk density is between 0.2 and 0.8 g / cm3, and the particle size range is generally between 40 and 180 microns. During the period, the processing technology is complex, the mineral raw materials are required to be approximately spherical after spheroidization, and the product after puffing and sintering is spherical, with uniform wall thickness, uniform particle size, small density variation range, high compressive and flexural strength , above 20MPa, low output, high added value, mainly used in oil field cementing as lightening material, tire rubber, paint production and other chemical industries; the particle size of mineral materials is 300 microns to 500 microns, and the bulk density after expansion is in 0.07~0.15 g / cm, used as thermal insulation board for interior and exterior walls of buildings, and mixed with cement to make thermal insulation mortar, it is required to achieve Class A flame retardant, achieve 65% energy saving and thermal insulation effect, and have low requirements for compressive strength; adopt free fall method and air suction Due to the high bulk density (0.2-0.8 g / cm3), the weight of the processed insulation board is more than 1200-1500 kg per cubic meter (the national standard is per cubic meter 300 kg), excessive weight increases the difficulty of construction, in order to ensure quality and safety, special reinforcement is required during construction, and the production efficiency is low and the cost is too high

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