Vitrification Recycling Work Flow：CHUO DENKI KOGYO CO.,LTD.

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CDK contributes to preservation of the global environment through our eco-melt system converting waste and contaminated soil into resources.

Features of the eco-melt system

・Our processes break down dioxins in high-temperature melting by means of electric-resistance heating and neutralize the toxicity of heavy metals.
・The slag generated is of stable quality and recyclable for a wide range of applications.
・Use of an advanced exhaust treatment system permits control of dioxins and other harmful emissions.

Vitrification Recycling Work Flow

Download a pdf file (1.57 MB) describing the vitrification work flow.

Vitrification Work Flow

Download pdf file (1.33 MB) describing waste handling from arrival to fixation.

Solid slag composition and leaching test results

Chemical composition of slag (wt%)

Component	SiO₂	Al₂O₃	CaO	MgO
Rate of content	35-38	15-18	30-35	3-5

Leaching test results on slag (mg/L)

Component of analysis	Cadmium	Lead	Hexavalent chromium	Arsenic	Total mercury	Selenium
Soil environment standard	0.01max	0.01max	0.05max	0.01max	0.0005max	0.01max
Leaching test result	<0.001	<0.01	<0.04	<0.002	<0.0005	<0.002

Leaching test method: Ministry of Environment directive no. 46