摘要:
A premixed material is obtained by tempering a castable refractory powder composition comprising refractory aggregate, fine refractory powder, alumina cement, a dispersing agent and an alumina cement hydration stopper with water. The hydration stopper is acidic in a state of an aqueous solution. The amount of the hydration stopper is controlled such that the premixed material has a pH of 2 to 7. Immediately after adding and mixing an alumina cement hydration starter to the premixed material, the resultant mixture is cast into a mold. The addition of the hydration starter can be carried out 5 days or more after the production of the premixed material.
摘要:
A premixed material is obtained by tempering a castable refractory powder composition comprising refractory aggregate, fine refractory powder, alumina cement, a dispersing agent and an alumina cement hydration stopper with water. The hydration stopper is acidic in a state of an aqueous solution. The amount of the hydration stopper is controlled such that the premixed material has a pH of 2 to 7. Immediately after adding and mixing an alumina cement hydration starter to the premixed material, the resultant mixture is cast into a mold. The addition of the hydration starter can be carried out 5 days or more after the production of the premixed material.
摘要:
An incoming call reporting toy that visually or aurally reports a call arrival state of a portable terminal to a person around the toy in an amusing fashion. An electromagnetic wave emitted when a portable terminal receives an incoming call is used to activate an incoming call reporting circuit incorporated in the toy body. A signal outputted from a signal controller configuring the incoming call reporting circuit drives a motor to allow the toy body to perform a predetermined operation while emitting a sound and/or light, thereby notifying a person around the toy of the arrival of the call at the portable terminal.