NSIC Co., Ltd.

Rice husk processing furnace

Complete recycling of rice husks

"Environmental Furnace Series Rice Husk Processing Furnace" heat-treats industrial waste "rice husk" with advanced control technology to produce "rice husk ash" containing beneficial amorphous soluble silica without emitting harmful substances. is a facility that manufactures

Recycling rice husk ash as silica

It is possible to manufacture "rice husk silica ash" depending on the application, such as agricultural field, industrial field, food additive, etc. Silica can be extracted inexpensively.

Utilization of thermal energy

It can be used as a heat source for heating vinyl greenhouses in winter.

New technology enabling safe extraction of amorphous and soluble silica

Rice husk contains about 20%Silica (SiO2 silicic acid)However, at normal processing temperature (1,000°C), silica crystallizes and does not dissolve in water. For this reason, although silica is necessary for the growth of rice plants, even if the ash after burning is returned to the paddy fields, the rice plants cannot absorb it, and in the end, the rice husks and rice husk ash become waste.

At NSIC, as a member of the "Rice Husk Recycling Project Team," we have been working on heat-treating rice husks to convert them into energy and turning the ash into silica. In order to utilize the silica contained in rice husks, it is essential that it be amorphous and soluble.

For these issues, the project teamFurnace controlestablished a new technology for the production of energy and high-purity amorphous rice husk silica ash. As a result, it has become possible to manufacture "rice husk silica ash" according to its uses, such as agriculture, industry, and food additives. Since it can be produced only by constant temperature stable combustion technology, silica can be extracted at low cost. It is safe because it is non-crystallized silica derived from rice husks.

What is in-furnace control?

It is a technology to load balance (load distribution) various condition settings such as furnace temperature, rice husk input amount, air amount, rice husk heat treatment time, etc. to produce amorphous silica.

What is silica

Silica (SiO2 silicic acid) is also present in the human body and is known as a heavy mineral contained in blood vessels and hair.

Condition of rice husk silica ash

amorphousno peak
Analysis method: X-ray diffraction
soluble60% or more
Analysis method: Potassium fluoride method
Highly active2.0-3.0
Analysis method: Luxan method
fixed carbon15% or less
Analysis method: mass calculation

Composition table of rice husk silica ash

Other components: K2O, CaO, MgO, etc.

Various types of rice husk processing furnaces

Modelprocessing power
Approximate dimensions
(furnace + holding chamber)
hot water boiler
heat exchange

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