JPS61188434A - Disposal of resin/metallic sheet composite - Google Patents

Abstract

PURPOSE:To dispose of resin/metallic sheet composites inexpensively while securing prevention of both the evolution of black smoke and the occurrence of environmental pollution, by specifying the feed rate at a specified value in performing the disposal of the composites in a refining furnace. CONSTITUTION:Resin/metallic sheet composites are fed to a refining furnace, where the resin is burnt by the heat of the furnace and the metallic sheets are molten and used as a subsidiary material. The emission of black smoke is prevented by controlling the feed rate of the composites so that the relationship may be satisfied. In the formula, W is the weight (kg) of the resin of the resin/metallic sheet composites, g is the volume (m<3>) of combustion exhaust gas per kg resin (m<3>/kg), Vin is the volume (m<3>/min) of exhaust gas inhaled from the furnace, Vs is the volume (m<3>/min) of air suctioned through the furnace inlet and the opening of is hood and T is the time (min) of duration of burning of the resin on the waste sheet composites.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for disposing of a resin composite metal plate.・ (Prior art) When disposing of metal plates such as steel plates with resin placed on one side, or sandwich-type resin composite metal plates with resin sandwiched between metal plates, they are simply disposed of in a refining furnace such as a steelmaking furnace. When the resin is put into a furnace, as the resin burns, there will be a lack of air in the furnace, resulting in incomplete combustion, producing a large amount of black smoke, and causing problems such as deteriorating the environment.

However, there is no technology that can solve these drawbacks.
The current situation is that it has not been found yet. (Objective of the Invention) The present invention aims to provide an excellent method for disposing of black smoke while reliably preventing the generation of such black smoke.

(Means for Solving the Problem) The present invention is characterized in that when a resin composite steel plate is placed in a refining furnace and disposed of, the resin composite metal plate is placed in the furnace such that the following formula is satisfied. This is a method for disposing of a resin composite metal plate.

W≦17y −'[' ・(Vin −Vs) where W: Amount of resin input into the resin composite metal plate (kg) t: Amount of combustion exhaust gas per 1 kg of resin (m”7 kg) Tin: Refining furnace exhaust gas exhaust capacity (→ Tsutomu) vB: Volume of air handled from the opening of the smelting furnace mouth and hood (tPr/+) T: Continuation time of combustion of waste board resin (minutes) When disposing of smelting furnaces such as converters, electric furnaces, and melting furnaces (strictly speaking, melting furnaces are not smelting furnaces, in the present invention (included in a refining furnace), the resin is burned by the furnace heat,
The metal plate (skin) is melted and used as an auxiliary raw material.

Therefore, the laminated metal plate is charged into the furnace in a manner that satisfies the above-mentioned formula.For example, the laminated metal plate may be charged during refining, or it may be charged prior to the main raw material to be charged due to the residual heat of the furnace. It is something that is burned.

The black smoke generated in the furnace can be guided to the furnace's exhaust gas treatment system without being discharged outside the furnace if a resin composite steel plate that satisfies the above formula is introduced, and the dust remover in the treatment system can prevent the black smoke from burning the resin. This removes the carbon powder that causes the black smoke that is generated and dissipates it as clean waste.

(Example) Next, examples of the present invention will be given.

No. 150 was placed in an oxygen top-blown converter, and during the next operation after tapping, a resin composite steel plate was charged into the furnace and treated prior to charging hot metal.

(1) Temperature inside converter furnace: 800~tooo℃
(2) Resin input amount: 18 to 9 (resin composite steel plate input amount) (180 kg) (3) Exhaust gas amount per hour of resin: 152 (4) Converter exhaust gas exhaust capacity: 500 liters (5) Converter mouth and hood opening
: Amount of suction air from 365i/% (kg) Burning duration of waste board resin : 2. Dispensing: The resin composite steel plate was a sandwich type in which resin was sandwiched between steel plates, and an average size of 1 x 1 m was used.

When the resin composite steel sheets were disposed of in this manner, no black smoke leaked out of the furnace, and the dust remover in the exhaust gas treatment system thoroughly removed the carbon powder generated during resin combustion, and it was released as colorless exhaust gas. Scattered.

(Effect of the invention) ·.

By doing this, the temperature during disposal of resin composite metal plates can be reduced.
It can be processed without generating black smoke or polluting the environment.

In addition, excellent effects such as low processing costs can be obtained.

Claims (1)

[Claims] Disposal of a resin composite metal plate, characterized in that when the resin composite metal plate is charged into a refining furnace and disposed of, the resin composite metal plate is charged into the furnace such that the following formula is satisfied: Processing method. W≦1/g・T・(Vin-Vs) However, W: Amount of resin added to the resin composite metal plate (kg) g: Amount of combustion exhaust gas per 1 kg of resin (m^3/kg) Vin: Refining furnace exhaust gas Exhaust capacity (m^3/min) Vs: Amount of suction air from the smelting furnace mouth and hood opening (
m^3/min) T: Burning duration of waste board resin (min)