Abstract: A slip supply system includes an annular slip supply pipe 24 with a primary pipe 24a, a shut-off valve 27 and a secondary pipe 24b connected in series. Each pouring pipe 28 which feeds slip to a casting machine 25 is connected at the upstream end thereof to the primary pipe 24a by way of an inlet side opening and closing valve 29. Each pouring pipe 28 is connected at the downstream end thereof to the secondary pipe 24b by way of an outlet side opening and closing valve 30. With the shut-off valve 27 being open and both opening and closing valves 29 and 30 being closed, slip is fed under pressure by a pressure feeding device 23b. The slip fed under pressure is passed through the annular slip supply pipe 24 and is returned to re-purifying facilities 23a, so that the interior of the annular slip supply pipe 24 is displaced by new slip.

Abstract: An apparatus for slip casting includes a pouring pipe for supplying slip, to which each mold is connected by way of a pouring hose having a pouring valve. A slip discharge pipe is provided in the vicinity of the pouring pipe. The pouring pipe and the slip discharge pipe are connected by a by-pass pipe which includes a rising pipe, a traverse pipe, a connecting pipe and an atmosphere pipe. Slip is fed from the pouring pipe to each mold. After a body is formed with a predetermined thickness in each mold 1, pressurized air is fed to the slip discharge spaces to discharge surplus slip to the slip discharge pipe. The height of the rising pipe is set so that the pressure of discharging the surplus slip and the head pressure of the slip within the rising pipe balance each other when the surplus slip is discharged to the slip discharge pipe. This allows the pressure within the slip discharge spaces to be stabilized.