The proper waste treatment of increasing volume while protecting environment is a quite important issue facing by the modern communities. Especially municipal solid waste in small communities is hardly to be recycled and is incinerated and land filled mostly. Kobe Steel's Refuse Derived Fuel (RDF) manufacturing plant offer one of the recycling method for these waste.

[Process flow]

The standard process flow of Kobe Steel's RDF manufacturing system is shown in Fig.1. Incombustibles in the refuse are rejected at the 1st and 2nd crashing and selecting portions. In order to reduce the water content, the refuse is dried till 10% of water content in the dryer. Coarse incombustibles are rejected in the 3rd air blow selector, crashed again and then formed to pellet by the pelletizer.

Fig.l Standard Process Flow of Kobe Steel's RDF Manufacturing System

[Advantages]

 1. Waste treatment system fitted to the environment protection
    - Incineration is not included.
    - Life of landfill site can be prolonged.

 2. Effective use of waste energy
    - Good quality fuel from waste
    - Electric generation is effectively conducted by collecting RDF from several
      facilities.

 3. Recycle
    - Recycling system consisted by crashing and selecting equipment
    - Combustibles and metals can be recovered as resource

[Feature]

 1. Rejecting system of unsuitable waste by remote control system.
 2. Complete shut down of bad smell by ozone and catalyzer de-odorizing system.
 3. Optimum design suited to refuse collection system and plant capacity by 
    applying various kinds of options.

[Specification]

 1. Capacity
    - Capacity per train  : 8-80 t/d
    - Discharge water     : nothing

 2. Waste
    - Municipal solid waste
    - Combustible bulky waste after crashing
    - Paper and plastic waste from commercial activity
    - Waste from wrapping paper and plastic

3. Quality of product RDF
    - Size (Dia. X L)             : dia.10-20 X L20-40mm
    - Specific gravity in bulk    : 0.6-0.7
    - Lower calorific value    : 3,500-4,500 kcal/kg

Table 1 Typical analysis