Abstract: The present invention provides both repertory and abbreviated dialing functions in a telephone dialer that facilitates telephone dialing operation. In particular, by pressing an enablng key the system is enabled for automatic dialing operation to dial a desired telephone number upon selection of a single repertory key or, for example, two keys from the key pad, which establishes coded information that effects automatic dialing operation of the desired telephone number. According to a preferred embodiment of the invention electrical circuitry for the telephone dialer is controlled by a microprocessor, or the like, which includes a central processor unit (CPU). On-hook dialing, telephone and/or speaker muting during dialing and unmuting while waiting for access to a line, security of stored telephone information and dialer use, and adaptability of the dialer to different telephone equipment having different dialing pulse formats may be included in the telephone dialer.

Abstract: Caustic magnesia and magnesium hydroxide slurry are mixed together with sufficient energy in a counter-current high energy mixer to form pellets of various sizes during hydration of the caustic magnesia. The pellets may be used as formed or may be calcined to caustic magnesia or deadburned in a kiln to refractory periclase.

Abstract: A process for preparing a high solids paste dispersion of fine particle size solid material in a vehicle which comprises premixing the solid material with the vehicle and a deagglomerating agent. The proportions of solid material, vehicle and deagglomerating agent are such that the premix remains a dry discrete flowable powder. The premix is then passed through a colloid mill which converts the powder to a paste dispersion in the form of a coherent mass in one pass through the mill.