Process for the water-saving ecologic collection, transport and deposition of slag and flyash from coal-fired thermal power stations with the simultaneous utilization of physical and chemical properties
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United States of America Patent
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Nov 10, 1992
Grant Date -
N/A
app pub date -
Apr 25, 1990
filing date -
Apr 25, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process is described for a water efficient, ecologically acceptable collection, delivery and depositing of slag and flyash from thermal power plants fired with pulverized coal. Slag is allowed to fall into a cooling water basin, conveyed to a condenser where it is combined with coarse flyash, te slag-flyash combination is delivered to a mixing space and combined with fine flyash, thereby forming a homogeneous mixture and the mixture is then circulated under specified conditions to achieve comminution to a predetermine value. Comminuted homogeneous mixtures is then measured continuously for properties of viscosity, quantity and pressure parameters. Information on the parameters is fed to a computer for comparison with preset values. The comminuted homogeneous mixture is then deposited in a deposit space. Any cooling water lost in the collecting-delivering and depositing steps is then replaced. A colloidal material may be added to the comminuted homogeneous mixture during the deposition step.
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