A process flow diagram for kaolin mining and dry processing is presented in Figure 11 25 1 and Figure 11 25 2 illustrates the wet processing of kaolin In the dry process the raw material is crushed to the desired size dried in rotary dryers The Kaolin and Ball Clay Association St Austell 44 01726 811328.
When China Clay Kaolin deposits are encountered core samples of the deposits are extracted and sent to a laboratory for testing Thousands of acres are drilled and thousands of feet of sample are tested to yield a handful of acceptable mining sites The samples are analyzed to determine the quality and extent of the deposits.
The process by which China Clay Kaolin is made suitable for industrial applications is extensive requiring large capital investments in equipment and technology The journey from the mines to the paper rubber paint or other industrial consumer involves many phases The mining and processing of China Clay Kaolin begins with exploration.
Clay is brought from the pit to a plant by truck where it is processed for finished product to different specified grades.
11 25 Clay Processing US EPA A process flow diagram for kaolin mining and dry processing is presented in Figure 11 25 1 and Figure 11 25 2 illustrates the wet processing of kaolin In the dry process the raw material is crushed to the desired size dried in rotary dryers pulverized and air floated to remove most of the coarse grit.
Until the 1870s the Edgars were farmers in Middlesex County N J near the town of Metuchen After discovering clay on the farm Charles S Edgar with his two brothers formed the Edgar Brothers Clay Co and began to mine it during the winter months when there were no crops to tend They dug the clay with shovels loaded it onto a wagon and hauled it 12 miles to the town of Perth Amboy where it was sold to scows headed for Trenton N J There it was used in making terra cotta pottery bricks and fire proof containers for enclosing ceramics during firing called saggers.
Charles learned that nearly all the clay used in producing ceramics and china in the United States was imported from England Being an ambitious young man and recognizing an opportunity itnbsp prompted him to seek an American source of this material During his travels throughout the country he devoted a portion of his time to prospecting While on a business trip to Boston Charles learned of the possible existence of undeveloped fine clay deposits in the north central Florida area.
He rode on trains across the state standing on the rearnbspnbsp platforms of the slowest locals he could find watching the earth where the tracks sliced through He was looking for white sand which could indicate the presence of the right kind of clay This clay was a white firing material called kaolin derived from the Chinese word kaoling meaning white hill.
His break came in 1880 when a geologist he met at a phosphate mine in Hawthorne FL advised him that he had seen this kaolin in an area several miles east of there Acting on this tip he hired a horse and buggy explored the area and found what he was looking for He purchased the land developed a process to mine the material and started the company in 1888 In 1892 it was incorporated as the Edgar Plastic Kaolin Company.
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Clay manufacturing can be either via a dry or wetslurry process Manufacture is comprised of a number of phases extraction blending where necessary crushing and drying Each stage requires certain competencies and machinery to ensure that we always offer the most optimum product for each application Clay is tested regularly throughout the manufacturing process to ensure.
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