Refractory materials, method for production thereof and refraratory using the material

A technology of refractory materials and manufacturing methods, applied in the field of refractory material raw materials and refractory material composition, can solve problems such as no enlightenment

Inactive Publication Date: 2003-12-10
KROSAKI HARIMA CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its use is a catalyst carrier for phosphoric acid fuel cells. Whether the graphitized carbon black is useful as a raw material for refractory materials is not recorded, and there is no inspiration

Method used

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  • Refractory materials, method for production thereof and refraratory using the material
  • Refractory materials, method for production thereof and refraratory using the material
  • Refractory materials, method for production thereof and refraratory using the material

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0123] Synthesis of graphite particle A (carbon particle b)

[0124] As a carbon black raw material, "Nitron #10 modification" manufactured by Nichika Carbon Co., Ltd. was used. This carbon black is a kind of carbon black belonging to Fa-st · Extor-Ding furnace black (FEF), and its average primary particle diameter is 41nm, and DBP absorption (x) is 126ml / 100g, and the DBP absorption of compressed sample ( y) is 89ml / 100g, which is the carbon particle a used in this example. It was heat-treated at 2100° C. for 3 hours in a carbon furnace (manufactured by Fuji Denpa Industries, Ltd., FVS-200 / 200 / 200, FRET-50) under an argon gas atmosphere to make it graphitized to obtain graphite particles A ( carbon particles b). The obtained particles were subjected to X-ray diffraction measurement, a peak derived from the graphite structure was observed, and it was judged that graphite particles were generated. The lattice spacing calculated from the diffraction lines corresponding to the...

Synthetic example 2

[0126] Synthesis of graphite particle B (carbon particle e)

[0127] Graphite particle B (carbon particle e) was synthesized as in Synthesis Example 1 except that the raw material carbon black used was changed. As the raw material carbon black, "HTC#20" manufactured by Nichika Carbon Co., Ltd. was used as the carbon black raw material. The carbon black is a so-called thermal black (FT) carbon black, its average primary particle size is 82nm, the DBP absorption (x) is 29ml / 100g, and the DBP absorption (y) of the compressed sample is 30ml / 100g , is the carbon particle d used in this example. The obtained particles were subjected to X-ray diffraction measurement, a peak derived from the graphite structure was observed, and it was judged that graphite particles were generated. The lattice spacing calculated from the diffraction lines corresponding to the 002 plane spacing of graphite was 3.42 Å. The particles had an average primary particle diameter of 70 nm, a DBP absorption (...

Synthetic example 3

[0129] Synthesis of graphite particles C (carbon particles c)

[0130] Mix carbon black "Nitelon #10 modified" and boron powder, so that the molar ratio of carbon and boron is 10:4, put into a crucible made of silicon dioxide, put a graphite film on the crucible, and its two ends are connected to electrodes. The electrode is energized to generate heat from the graphite film, and the above-mentioned mixture is ignited, and graphite particles C (carbon particles c) are obtained by self-combustion synthesis using the reaction heat when carbides are formed. The obtained particles were subjected to X-ray diffraction measurement, a peak derived from the graphite structure was observed, and it was judged that graphite particles were generated. The lattice spacing calculated from the diffraction lines corresponding to the 002 plane spacing of graphite was 3.38 Å. Acknowledgment from B 4 The 2θ=37.8° peak of the 021 diffraction line of C. The X-ray diffraction pattern is shown in f...

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Abstract

Refractories obtained by molding a refractory raw material composition containing a refractory raw material including graphite grains having an average grain size of 500 nm or less or a refractory raw material including graphite grains obtained by graphitizing carbon black and a refractory filler, Or refractories containing carbonaceous grains (A) selected from carbon black or graphite grains obtained by graphitizing carbon black and having a DBP absorption (x) of 80 ml / 100 g or more, carbonaceous grains (B) selected from carbon black and graphite grains obtained by graphitizing carbon black and having a DBP absorption (x) of less than 80 ml / 100 g, and a refractory filler. Refractories excellent in corrosion resistance, oxidation resistance and thermal shock resistance, especially carbon-contained refractories having a low carbon content are thereby provided.

Description

technical field [0001] The invention relates to a refractory raw material composed of graphite particles and a method for manufacturing the available graphite particles. Moreover, this invention relates to the refractory raw material composition containing this raw material. Furthermore, the present invention relates to a refractory raw material composition obtained by blending a plurality of specific carbon particles selected from carbon black and graphite particles for graphitizing carbon black. Also, the present invention relates to a refractory material formed by molding the refractory raw material composition, in particular, to a refractory material having excellent corrosion resistance, oxidation resistance and thermal shock resistance, suitable for use as a refining container Lined with refractory material. Background technique [0002] Carbon has a property that it is difficult to be wetted by molten materials such as slag. For this reason, refractory materials co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/04C01B31/04C04B35/01C04B35/043C04B35/52C04B35/65
CPCC04B2235/3843C04B2235/9684C04B2235/3409C04B2235/3821C04B2235/3232C04B2235/3217C04B2235/5454C04B2235/80C04B35/013C04B2235/549C04B2235/77C04B2235/5292C04B2235/9607C04B2235/96C04B2235/48C04B2235/425B82Y30/00C04B35/522C04B2235/402C04B35/043C04B2235/9692C04B35/65C04B2235/424C04B2235/663C04B2235/428C04B2235/404C04B35/64C04B2235/421C04B35/52
Inventor 落合常已高长茂幸
Owner KROSAKI HARIMA CORP
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