38
Inventory of Innovative Indoor Smoke
Alleviating Technologies in Nepal
Table 4.1: Raw materials for briquette in Nepal
Residue
Rice husk
Bagasse
Almond shell
Cotton stalk
Jute stick
Maize cob
Herb residue
Production (MT/Yr)
1,343,366
701,142
4
3,688
43,605
433,635
7,016
Source: RONAST 2003
Various types of briquettes are described below:
4.1 Rice husk briquettes
Remarks
Husk: 25% paddy
Bagasse: 33% of sugarcane
Shell: 33% of almond pod
3 MT of cotton stalk/ha
3 MT of jute stick/ha
Maize cobs: 30% of maize grain
Residue: 98% of raw herbs
Photograph 4.1: Rice husk briquettes
Source: Mhyaipi Briquette Industry
Year of dissemination
Cost
Quantity produced
Manufacturing process and technical
description
Briquette industry was established during the 1980s in Nepal
but subsequently closed down due to the high cost of screw
and briquette manufacturing materials (such as rice husk) and
availability. Mhyaipi Briquette Industry has been producing
briquette in Nepal since its establishment in 1994.
NRs. 10 per kg (25cm briquette weighs 1 kg).
3000 tons.
These briquettes are produced in a heated-die screw-press
machine. Rice husk is forced by a screw through a heated die
which is maintained at approximately 300°C by an electrical coil
heater fixed around it. Before passing through the heated die,
the moisture in the rice husk is removed either mechanically or
manually. The briquette produced by this method is much
stronger and denser. The internal and external diameter is 5