A method of preparing a suspension of fly ashes in water and a system of devices for production and pipe transport of this suspension

摘要

In the system of devices according to the invention a storage reservoir (1), a feeder (2) and a weigh feeder (3) of ashes, a water feeder (4), a mixer (5) of ashes and water and a suspension tank (6) are connected in a gravitation train with a pump (7) of the suspension, whereby in the mixer (5) of the suspension at least two agitators (12) are applied in a form of shafts of horizontal axes with several blade-rings mounted on them, said agitators (12) spinning in the opposite directions. The mixer (5) of the suspension is provided also with inlets (13) for ashes and water (14) situated respectively over the agitators (5), and on the bottom of the suspension tank (6) air nozzles (10) are situated. The essence of the method according to the invention consists in preparation of a suspension in batches in periodically repeated cycles. During each cycle dry fly ashes are dynamically mixed at the weight ratio of ashes to water 1 : 3. During mixing in the suspension mixer a stream of water and a stream of ashes collide with each other many times thus forming a suspension of the rheological properties similar to the properties of the liquid.