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Microwave treatment of raw materials, such as stripping vermiculite and other minerals, and handling contaminated materials

A microwave and material technology, which is applied in the field of mineral expansion of water, can solve problems such as problematic and unproven

Inactive Publication Date: 2011-12-28
UNIVERSITY OF NOTTINGHAM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The use of microwaves to exfoliate finer grades of vermiculite is highly problematic, and the commercial use of microwaves to exfoliate either grade at industrial levels has not been demonstrated.

Method used

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  • Microwave treatment of raw materials, such as stripping vermiculite and other minerals, and handling contaminated materials
  • Microwave treatment of raw materials, such as stripping vermiculite and other minerals, and handling contaminated materials
  • Microwave treatment of raw materials, such as stripping vermiculite and other minerals, and handling contaminated materials

Examples

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Embodiment Construction

[0053] figure 1 A schematic diagram of a prior art, in this case a furnace based stripping plant, is shown. A vermiculite expander system 1 includes a large hydrocarbon fuel furnace 2, a release station 4 for expanded or stripped product, a dust collector unit 6 and a cooling zone 8. For display scale, figure 1 A schematic diagram of a person 5 is also shown in .

[0054] Unexpanded vermiculite is placed into furnace 2 where it is heated and subsequently expanded. Expanded vermiculite falls from the bottom of furnace 2 into product release station 4 .

[0055] A dust collector unit 6 is required to remove most of the harmful dust generated from this process.

[0056] The expanded vermiculite is discharged from the furnace 2 at a temperature of several hundred degrees Celsius and is thus transported to the cooling zone 8 where it is placed in piles to cool until it can be packed.

[0057] figure 2 A vermiculite expander apparatus or system 10 is shown, which includes a m...

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Abstract

Ways of applying microwaves to feedstock to be processed are disclosed. One embodiment relates to heating inter-layer water in vermiculite to expand the vermiculite. Another embodiment relates to heating water in oil-contaminated materials and waste products, such as drilling cuttings, contaminated soils and certain types of animal by-products, to drive out oil. In some embodiments a microwave tunnel applicator has the microwaves applied from beneath the feedstock.

Description

technical field [0001] The present invention relates to microwave treatment of raw materials. One area of ​​application relates to methods and apparatus for exfoliating or expanding vermiculite or other minerals containing interlayer water. Another field of application involves the removal of oil from oil-contaminated materials and waste such as drill cuttings and certain types of animal by-products, as well as the treatment of contaminated land and soil. Background technique [0002] This invention originated during the time we were considering vermiculite production, and it was convenient to introduce it to that occasion. Vermiculite is mined in the hydrous state where it consists of thin flakes with associated water. By heating a mineral, it can be expanded, or exfoliated, to a volume of 5 to 10 to 20 times its original size. Vermiculite has a huge global industry - about 600,000 tons are mined a year. Applications include fluid absorption - such as water absorption (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B20/06
CPCC04B20/063C10G1/047B09C1/06C04B20/06E21B21/065C10G2300/1011C10G1/02C10G2300/1033Y02P30/20C04B14/202
Inventor 克里斯多佛·多兹乔治斯·迪米特拉奇斯山姆·金曼
Owner UNIVERSITY OF NOTTINGHAM