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THE PORTLAND CEMENT INDUSTRY TODAY
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acid alumina amount apparatus boiling briquettes British Standard British Standard Specification burning burning zone calcination calcium carbonate carbon dioxide cement kilns cement manufacture cent chalk chamber Chatelier chemical clay clinker coal concrete considerable containing conveyors cost crusher crushing cubes diameter discharge dry process dust Elutriator expansion factor feed filter fuel gases gauge grinding gypsum heat hopper hydrated hydraulic hydrochloric acid iron lime limestone load machine magnesia method mill mixing mixture moisture mortar motors mould necessary obtained operation output oxide particles percentage plant plate pozzolana precipitate pressure produce proportion pulverised pyrometer quantity rapid-hardening Portland cement raw materials reduced residue Roman cement rotary kiln sacks sample setting silica silos slurry solution standard coal strength suitable surface temperature tensile tensile strength tons tube usually velocity waste-heat boiler weight wet process