Environmentally-friendly efficient graphite purifying apparatus

Abstract

The invention discloses an environmentally-friendly efficient graphite purifying apparatus. The apparatus is characterized in that the inner wall of a reaction kettle (1) is provided with a heat insulation layer (3), a heater (4) is arranged in the heat insulation layer (3), the upper end of a purifying furnace (17) is provided with an acid feeding hole (10), the acid feeding hole (10) is provided with an acid solution flow meter (11), the lower end of the purifying furnace (17) is provided with a tail gas discharge opening (7), the tail gas discharge opening (7) is connected with an acid mist absorption tower (5) through a tail gas conveying pipeline (6), a water outlet tube (8) and a water inlet tube (16) are arranged between the inner liner and the outer wall of the purifying furnace (17), the water outlet tube (8) and the water inlet tube (16) are respectively connected with a heater (9) to form a water current loop, and an inert gas generator (15) is arranged above the cavity of the purifying furnace (17). The apparatus has the advantages of heat insulation, energy saving and high purifying efficiency, and allows the purity to reach 99.996% or above.

Description

technical field [0001] The invention belongs to the technical field of graphite purification equipment, and in particular relates to an environment-friendly graphite high-efficiency purification equipment. Background technique [0002] Graphite has the characteristics of good high temperature resistance, electrical conductivity, thermal conductivity, lubricity, chemical stability, plasticity and thermal shock resistance, and is widely used in metallurgy, machinery, petroleum, environmental protection, chemical industry, fire resistance, energy, electric power, Electronics, medicine, military industry and aerospace and other fields. Graphite ore is divided into two industrial types: crystalline (flaky) graphite ore and aphanitic (soily) graphite ore. Flake graphite crystallizes better, the crystal particle size is greater than 1 μm, mostly in the form of aggregates, the ore grade is low, generally 3%~5%, but the selectability is good; aphanitic (soily) is generally in the fo...

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Problems solved by technology

At present, the graphite purification furnace suitable for small batch production is simple in structure and low in cost, but due to the lack of thermal insulation performance of the reactor, the graphite purification efficiency is low; the purification equipment has acid, alkali corrosion and high temperature resistance to a certain extent, but most of the current purification equipment Does not contain acid treatment function. In addition, the tail gas purific

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