Lightweight building aggregate mfr.

摘要

A process for the manufacture of lightweight aggregate for use in the building industry which comprises blending a pulverised fuel ash with a binder consisting essentially of quicklime and/or hydrated lime in an amount less than 5% (calculated as CaO) based on the total dry weight of fuel ash and binder, forming the blend into granules or pellets, if necessary, or desired with the addition of water, and curing or hardening the pellets or granules by maintaining them at a temperature within the range of from 35 to 100 deg.C - in an atmosphere saturated with water vapour. - (7pp) EPAB- EP-120921 B A process for the manufacture of lightweight aggregate for use in the building industry which comprises blending a pulverised fuel ash with a binder consisting essentially of quicklime and/or hydrated lime in an amount less than 5% (calculated as CaO) based on the total dry weight of fuel ash and binder, forming the blend into granules or pellets, if necessary, or desired with the addition of water, and curing or hardening the pellets or granules by maintaining them at a temperature within the range of from 35 to 100 deg.C in an atmosphere saturated with water vapour. GBAB- GB2128178 B A process for the manufacture of lightweight aggregate for use in the building industry which comprises blending a siliceous material with a binder comprising quick lime and/or hydrated lime in an amt. less than 5% (calculated as CaO) based on the total dry wt. of siliceous material and binder, forming the blend into granules or pellets, if necessary or desired with the addn. of water, and curing or hardening the pellets or granules by maintaining them at a temp. within the range of from 35 deg. C to 100 deg. C in an atmos. saturated with water vapour. USAB- US4770831 A A lightweight aggregate for use in the building industry is produced by combining fly ash with up to 5% of lime and sufficient water to allow pelletisation. After moulding into pellets the material is cured or hardened at 35-100 degrees C in an atmosphere saturated with water.