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Jet milling of boron powder using inert gases to meet purity requirements

An inert gas, gas technology, applied in the direction of boron, boron/boride, grain processing, etc., can solve problems such as unavailability of boron powder

Inactive Publication Date: 2013-01-02
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the ground boron powder may become unusable, or may have to undergo further processing to remove impurities before the powder can be used in the manufacturing process

Method used

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  • Jet milling of boron powder using inert gases to meet purity requirements
  • Jet milling of boron powder using inert gases to meet purity requirements
  • Jet milling of boron powder using inert gases to meet purity requirements

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Embodiment Construction

[0010] Described and illustrated in the drawings are exemplary embodiments incorporating one or more aspects of the present invention. These illustrated examples are not intended to be limiting of the invention. For example, one or more aspects of the invention can be used in other embodiments and even other types of devices. Furthermore, certain terms are used herein for convenience only and are not to be construed as limitations on the present invention. Furthermore, the same reference numerals are used to denote the same elements in the drawings.

[0011] An exemplary processing system 40 including a jet mill 42 is shown generally at figure 1 and figure 2 Inside. In one particular example, processing system 40 is used to produce ground boron powder. It should be understood that other powders may also be milled. Processing system 40 utilizes at least one inert gas in accordance with aspects of the present invention, as will be described in detail below.

[0012] It s...

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Abstract

The invention relates to jet milling of boron powder using inert gases to meet purity requirements. A processing system (40) and an associated method for milling boron (44, 72) with impurity contamination avoidance are provided. The system includes a jet mill (42) for reducing the particle size of a boron feed stock (44), and a feed stock inlet (54) for delivering the boron feed stock (44) toward the jet mill (42). The system includes at least one inlet (for example, 46, 60) for delivering at least one gas (for example, 48, 62) into the jet mill (42). The gas and the boron feed stock (44) comingle within the jet mill (42) during milling reduction of boron particle size. The system includes a source of the at least one gas operatively connected to the at least one inlet (for example, 46, 60), with the at least one gas (for example, 48, 62) being a gas that avoids transferring impurity during milling reduction of boron particle size.

Description

technical field [0001] The subject matter disclosed herein relates to jet milling boron powders, and more particularly to jet milling boron powders with an inert gas to meet purity requirements. Background technique [0002] Jet mills are used to pulverize raw materials with relatively large particle sizes into powders with relatively small particle sizes. Typically, jet mills operate using compressed air obtained from the ambient atmosphere of the plant, where the compressed air is used as a carrier to suspend the particles in the fluid flow within the jet mill. However, compressed air may contain considerable oil content. This oil content can be introduced into the compressed air from a variety of sources. For example, a moving compressor component may have oil on it and this oil may mix with the compressed air. When compressed air is used as feed gas, milling gas, or both to operate a jet mill, the oil contained in the compressed air is often imparted to the final prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C19/06
CPCB02C19/06C01B35/023
Inventor J·M·卢斯蒂格J·L·约翰宁
Owner GENERAL ELECTRIC CO
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