| 摘要 |
A non-toxic clay pigeon with excellent mechanical and ballistic properties is produced by subjecting a mixture consisting essentially of plaster, an amount of water constituting a considerable amount in relation to the amount necessary for setting the plaster, calcium carbonate and optionally fly ash, and/or heavy spar; as well as one or more surfactants, organic binders, set-controlling agents and brittleness-promoting agents to compression in a clay pigeon mould heated to a temperature in the range of 100 DEG to 160 DEG C. such that the excess amount of water in relation to the amount necessary for setting the plaster is driven off from the mould.
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