颚式粉碎仪 BB 300
专业报道 (2)
Preparation of Soil, Sewage Sludge and Sediment Samples in a Wastewater Treatment Laboratory
The preparation of a mixture of organic and inorganic samples holds some difficulties: whereas sand, clay and stones can usually be ground to homogeneous samples with suitable laboratory mills, the high energy input can cause samples with organic components such as fat or starch to cake. Carsten Bunn, a laboratory technician at the waste water treatment laboratory BRW, has to deal with this problem every day. He treats samples which are taken from the sand traps of the wastewater treatment plants and consist of exactly that mixture. The sediments of household and industry waste water not only contain sand, clay or leaves but anything that people nowadays dispose of through the sewer system: cellulose, hair and especially food residues.
Size reduction within the context of sample preparation
In general “size reduction” is taken to mean the disintegration of solid substances by mechanical forces without altering their state.
测试报告 (14)
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Bauxite
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Graphite, Melting pots clay-graphit, melting pot fragments
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Metals, Alloys
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Metals, Ferro alloys
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Metals, Ferro alloys, ferrochromium
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Metals, Ferro alloys, ferro vanadium, ferro molybdenum
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Metals, Ferro alloys: FeV / FeW / FeMo / Fe alloy without specification
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Selenium, Antimony
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Silicon
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Silicon, 2 Blocks
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Silicon, Bars wafer blanks
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Silicon, Poly crystalline
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Stones, Granite, gress
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Stones, Sandstone
Subject to technical modifications and errors
