Powdered cement, produced by heating a properly proportioned mixture of finely ground raw materials (calcium carbonate, silica, alumina, and iron oxide) in a kiln to a temperature of about 2,700oF
Or clencher; Hull planking running fore-and-aft with the lower edge of each strake overlapping outboard the upper edge of the plank below it Clinker strakes are usually secured to each other by nails with roved heads (i e the nail ends have a flat washer placed over them and are then mushroomed over with a hammer) See carvel
The material that emerges from the cement kiln after burning It is in the form of dark, porous nodules which are ground with a small amount of gypsum to give cement
Scoria or vitrified incombustible matter, formed in a grate or furnace where anthracite coal in used; vitrified or burnt matter ejected from a volcano; slag
a hard brick used as a paving stone turn to clinker or form clinker under excessive heat in burning clear out the cinders and clinker from; "we clinkered the fire frequently
A clinker is coagulated slag or metal impurities that "melt" from the coal as it becomes coke Most clinkers consist of pyrites that are naturally included in coal seams Using "metallurgical" grade coal (met coal) greatly reduces clinkers Clinkers will block air flow from the tuyere and that is why the firepot has a clinker breaker Large clinkers will have to be removed with a poker
(Humphrey) Hero of Smollett's novel so called The general scheme of Oliver Twist resembles it Humphrey is a workhouse boy, put out apprentice; but being afterwards reduced to great want, he attracts the notice of Mr Bramble, who takes him into his service He turns out to be Bramble's natural son, and falls in love with Winifred Jenkins, Miss Bramble's maid