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Sintering agent for dry particulate refractory composition

A technology of sintering agent and composition, which is applied in the field of dry granular refractory composition, sintering agent for dry granular refractory composition, and consolidation products, and can solve the problems of harmful, inappropriate, and inability to ensure the particle mixture of refractory materials, etc.

Pending Publication Date: 2019-04-26
IMERTECH SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, it is generally not suitable to use these resins, organic thermosetting or thermoplastic resins
In fact, these resins only allow bonding at temperatures below the sintering temperature (temperature range 100°C to 400°C), and do not ensure coalescence of particle mixtures at temperatures typically above 1,000°C
Also, the use of these resins promotes porosity inside the particle mixture after complete pyrolysis, which is particularly detrimental to refractory performance

Method used

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  • Sintering agent for dry particulate refractory composition
  • Sintering agent for dry particulate refractory composition
  • Sintering agent for dry particulate refractory composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0117] Composition of dry refractory mixture

[0118] Dry granular refractory compositions according to the present invention and outside the present invention were prepared as follows.

[0119] The following materials were used in all examples:

[0120]

[0121] Table 1

[0122] Use the following compounds:

[0123] - Anorthite (Sibelco);

[0124] - (Budenheim): Potassium dihydrogen orthophosphate (mainly potassium phosphate);

[0125] - (Budenheim): polyphosphoric acid, sodium citrate (mainly sodium phosphate);

[0126] - (Budenheim): phosphoric acid, trisodium citrate, dodecahydrate;

[0127] - (Budenheim): sodium dihydrogen orthophosphate;

[0128] - (Care Chemicals): sodium silicate (Na 2 SiO 3 );

[0129] -FERRO Frit TF 9015SE and Frit TF 90 5158M, the composition and loss on ignition are shown in Table 2.

[0130]

Sintered 1

Sinter 2

Loss on ignition at 900°C

0.37％

0.34％

SiO 2

50.4％

48.7％

CaO ...

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Abstract

The present invention relates to a sintering agent for dry particulate refractory compositions and dry particulate refractory compositions. The use of dry particulate refractory compositions also formpart of the present invention.

Description

technical field [0001] In general, the present invention relates to the field of refractory technology. In particular, the present invention relates to a sintering agent for dry granular refractory compositions derived from at least one feldspar-containing mineral compound and at least one phosphate salt exhibiting a loss on ignition (at 900°C) of less than 20% The combination. [0002] The present invention also relates to dry granular refractory compositions comprising refractory particles (or aggregates) and said sintering agent. Such compositions are used in particular for the manufacture of furnace linings for melting especially metals, such as induction furnaces / crucibles. [0003] Finally, the invention relates to consolidated products obtained from the dry granular refractory compositions of the invention and to methods of making such products. Background technique [0004] Dry granular refractory compositions, also known as dry mixes or dry vibrating mixes (DVM),...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/18C04B35/01C04B35/14C04B35/63C04B35/66
CPCC04B35/01C04B35/14C04B35/18C04B35/6303C04B2235/3427C04B2235/3472C04B2235/3481C04B2235/425C04B2235/445C04B2235/448C04B2235/449C04B2235/50C04B2235/5427C04B35/66C04B35/48C04B35/481F27B14/08F27D1/0006C04B2235/447C04B2235/3463C04B2235/3409C04B2235/3436F27B2014/0843C04B2235/5436
Inventor R·特切尔R·苏蒂尔
Owner IMERTECH SAS
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