Treatment method of asbestos-containing waste
- Year: 2006
PROBLEM TO BE SOLVED: To provide a treatment method capable of safely and certainly detoxifying asbestos-containing waste. SOLUTION: The asbestos-containing waste is immersed in an oil tank in which liquid oil is housed or the liquid oil is sprayed on the asbestos-containing waste to apply dust scattering preventing treatment to the asbestos-containing waste, the asbestos-containing waste subjected to dust scattering preventing treatment is crushed into an average particle size of 5 mm or below, the crushed matter of the waste and the liquid oil are mixed to prepare a mixture with a viscosity of 10,000 cps or below and the mixture is charged in a cement baking rotary kiln to be detoxified. COPYRIGHT: (C)2009,JPO&INPIT
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PURPOSE: To facilitate the solidification of materials to be crushed with cement and the package thereof by forming a hermetic space maintained in a negative pressure state, forming a liquid spraying area in this space and crushing asbestos cement pipes in this liquid spraying area, then solidifying the crushed matter. CONSTITUTION: A cap body 7 is first opened and the asbestos cement pipe to be subjected to a disposing treatment is charged from a treating material charging port 6. The asbestos ...
PURPOSE: To effect an efficient melting and consolidation of a waste asbestos at a relatively low temp. using a simple device by a method wherein a main mixture of the asbestos and carbonaceous solid fuel, with a binder added with mixing thereto as required, is pelletized and it is thereafter burned and sintered while air is being supplied. CONSTITUTION: A waste asbestos discarded from the construction, etc., employing the same and carbonaceous solid fuel are mainly mixed together, with a binder...
PROBLEM TO BE SOLVED: To make an asbestos waste material harmless and effectively utilize it by treating the asbestos waste together with cement raw materials in a rotary kiln. SOLUTION: Cement is produced by using a rotary kiln 2. An asbestos waste material supplied from a supplying pipe 5 (7: a hopper; 6: an ejector) and cement raw materials supplied through a pre-heater 1 are treated at a burning zone (4: a burner) in the rotary kiln 2. Cement clinker containing the asbestos waste material ma...
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Method of removing asbestos from asbestos-containing materials by 99% through low temperature heat treatment
Disclosed is a method of removing asbestos from an asbestos-containing material by 99% through low temperature heat treatment. The method includes mixing an asbestos-containing material with an oxalic acid at a weight ratio in a range of 1:0.002 to 1:1 and performing heat treatment with respect to a mixture at a temperature of 90° C. to 110° C. to remove asbestos from the asbestos-containing material by 99% or more.
Method for removing 99% of asbestos from asbestos-containing material using low temperature heat treatment
PROBLEM TO BE SOLVED: To provide a method for removing 99% of asbestos from asbestos-containing material using low temperature heat treatment.SOLUTION: After asbestos-containing material is crushed by a jaw crusher and a cone crusher or pulverized by a pulverizer, the asbestos-containing material and oxalic acid diluted by one or more selected from the group consisting of tap water, distilled water, and deionized water are mixed in the weight ratio of 1:0.002-1:1, and then heat-treated in 90-110...