Color Chalk Piece Making Machine

To make chalk, limestone is first quarried, generally by an open pit quarry method. Next, the limestone must be crushed. Primary crushing, such as in a jaw crusher, breaks down large boulders; secondary crushing pulverizes smaller chunks into pebbles.The process for making the chalk of this invention consists of two steps; the first step is the production of the resinous coagulants and the second one is that the resinous coagulant is, immediately after being made, added to the chalk material and the mixture is ext:rusion-molded as chalk.Chalk is a soft, white, porous, sedimentary carbonate rock, a form of limestone composed of the mineral calcite. Calcite is an ionic salt called calcium carbonate or CaCO3.