FIELD: apparatus or methods for producing mixtures of cement with other substances, for instance slurries, mortars, porous or fibrous compositions, namely to prepare solution of liquid additive in main liquid for gel forming.
SUBSTANCE: method involves heating main liquid flow under temperature Tc, which is higher than ambient temperature and less than additive gelling temperature Tg; supplying heated main liquid flow to mixing device; applying energy to heated main liquid flow at mixing device inlet; injecting liquid additive into heated main liquid flow downstream of mixing device inlet to provide mixture thereof so that energy taken by heated main liquid flow at mixing device inlet prevents liquid additive gelling.
EFFECT: increased efficiency, possibility of solution gelling at relatively low temperature.
12 cl, 3 ex, 2 tbl, 5 dwg
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