Heat storage brick and its preparing process

A heat storage brick and iron ore technology, applied in the field of sintered materials, can solve the problems of high thermal conductivity, difficulty in popularization and application, and small specific gravity, and achieve the effects of simple manufacturing process, easy popularization and application, and low production cost

Active Publication Date: 2006-09-06
HANGZHOU CHAONAI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small specific gravity, small heat capacity and high thermal conductivity of this kind of heat storage brick, there are fast heat release and short heat storage time, which cannot guarantee the long-term and stable heat release time of electric heaters.
Although in recent years there have been heat storage bricks made of iron oxide as the main raw material in foreign countries, which has greatly improved the heat storage capacity of electric heating equipment, but due to the unstable product strength of heat storage bricks and the high cost of binders, thus The actual application effect is not good, and it is difficult to carry out large-scale promotion and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: the present invention selects the iron ore particle that contains iron sesquioxide not less than 60% as main raw material (block iron ore carries out rock-breaking pulverization first), wherein iron ore particle contains at least trioxide Ferrous not less than 62%, aluminum oxide not less than 1.5%, calcium oxide not less than 0.5%, bulk density not less than 4.6g / cm 3 ; Use yellow mud and sodium silicate solution as auxiliary materials, wherein the yellow mud contains at least 3% of ferric oxide, not less than 1.5% of aluminum oxide, not less than 0.5% of calcium oxide, and not less than 17% of ignition loss ; Sodium silicate solution is liquid, Baume degree 39 °. First wash the above-mentioned granular iron ore main raw material with water, and then dry or dry it to ensure that its water content is within 0.5%. The above-mentioned main raw material treatment can reduce the acidity of the raw material, and at the same time expose the roughness of the raw ...

Embodiment 2

[0010] Embodiment 2: The present invention selects granular iron ore as the main raw material, wherein the granular iron ore contains at least not less than 60% of ferric oxide, not less than 1.5% of aluminum oxide, not less than 0.5% of calcium oxide, Bulk density not less than 4.6g / cm 3 ; Use yellow mud and sodium silicate solution as auxiliary materials, wherein the yellow mud contains at least 3% of ferric oxide, not less than 1.5% of aluminum oxide, not less than 0.5% of calcium oxide, and not less than 17% of ignition loss ; Sodium silicate solution is liquid, Baume degree 39 °. First wash the above-mentioned granular iron ore main raw materials with water, and then dry or dry them to ensure that their water content is within 0.5%; then mix the above-mentioned main raw materials and auxiliary materials according to the following weight ratio: iron ore granules 93%, yellow mud 3%, sodium silicate solution 4%; after mixing and molding, it is sintered at a high temperature...

Embodiment 3

[0011] Embodiment 3: The present invention selects granular iron ore as the main raw material, wherein the granular iron ore contains at least 61% of ferric oxide, not less than 1.5% of aluminum oxide, not less than 0.5% of calcium oxide, Bulk density not less than 4.6g / cm 3 ; Use yellow mud and sodium silicate solution as auxiliary materials, wherein the yellow mud contains at least 3% of ferric oxide, not less than 1.5% of aluminum oxide, not less than 0.5% of calcium oxide, and not less than 17% of ignition loss ; Sodium silicate solution is liquid, Baume degree 39 °. First wash the above-mentioned granular iron ore main raw materials with water, and then dry or dry them to ensure that their water content is within 0.5%; then mix the above-mentioned main raw materials and auxiliary materials according to the following weight ratio: iron ore granules 90%, yellow mud 4%, sodium silicate solution 6%; after mixing and molding, it is sintered at a high temperature of 1030°C to ...

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Abstract

A heat-storing brick and its preparing method are disclosed, choosing the iron particle containing Fe2O3 not less than 60% as the main raw material which is mixed with slag and slime as burnt lime, ten aluminum powder in high temperature; the mess ratio of its components is : iron concrete particle: 87~93%, slag : 3-6%, slime : 4-7%. Its preparing method is: wash the iron concrete particle with water, dry it, assuring its water content within 0.5%, with then mix with slag and slime, obtaining the mixture formed which is aluminum powder in the temperature of 930-1030deg.c. The product has larger mortar, can store more heat, meanwhile, its heat conducting rate is lower so that its heat-discharging course last longer, used in core of, can make remarkable energy-saving effect; besides, it also has simple productive technique, low cost, good quality and wide use.

Description

technical field [0001] The invention relates to a sintered material with large heat capacity and capable of storing heat, especially a block-shaped heat storage brick product and a preparation method. Background technique [0002] At present, electric heating equipment with energy saving and consumption reduction refers to products that mainly use low-valley electricity to charge and heat, and then store heat energy until the peak electricity period and then release it for use. The heat storage element is a storage device made of magnesium oxide as the main material. hot bricks. However, due to the small specific gravity, small heat capacity and high thermal conductivity of this kind of heat storage brick, there are fast heat release and short heat storage time, which cannot guarantee the long-term and stable heat release time of the electric heater. Although in recent years there have been heat storage bricks made of iron oxide as the main raw material in foreign countries...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/13C04B33/02
Inventor 张阿强
Owner HANGZHOU CHAONAI IND
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