Refractory bricks prepared from pebbles in Changjiang River, and preparation method of refractory bricks

Abstract

The invention discloses refractory bricks prepared from pebbles in Changjiang River, and a preparation method of the refractory bricks. The refractory bricks are prepared from the following raw materials in parts by weight: 16-24 parts of the pebbles in Changjiang River, 24-38 parts of coal slime, 15-25 parts of boehmite, 12-23 parts of tailings of magnesite, 10-15 parts of spinel, 13-21 parts of silica powder, 16-28 parts of vanadium iron slag, 14-22 parts of andalusite, 15-25 parts of furnace ash, 25-35 parts of bauxite, 11-19 parts of phyllite, 8-14 parts of sulphite pulp and 10-15 parts of sediment in Yellow River. The pebbles in Changjiang River not only can be compounded with the raw materials such as the andalusite, the boehmite, the tailings of the magnesite and the spinel so as to be used as a refractory raw material of the refractory bricks, but also can be compounded with the raw materials such as the furnace ash, the sediment in Yellow River, the vanadium iron slag and the phyllite so as to be used as a filling material of the refractory bricks, so that the refractory bricks prepared from the pebbles in Changjiang River is excellent in comprehensive performance; the refractory bricks have the characteristics of being high in strength, high in refractoriness under load, good in high temperature resistance, high in acid and alkaline corrosion resistance, good in thermal shock resistance, and the like.

Description

Technical field

[0001] The invention relates to a Yangtze River pebble refractory brick and a preparation method thereof, belonging to the field of refractories. Background technique

[0002] Refractory brick is a kind of building material brick, and its properties are the same as its name, "refractory". It is a refractory made of refractory clay or other refractory materials, which can withstand various physical and chemical changes and mechanical effects at high temperatures. Refractory bricks are not common in our lives, but they appear in some buildings that are closely related to our lives, such as house construction, kiln construction, and thermal equipment.

[0003] The patent number is: 201510494613.X. The invention patent discloses a foamed thermal insulation refractory brick produced from coal gangue and its preparation method. Its raw material composition is 40-60 parts of coal gangue and bauxite tailings in parts by weight. 30-50 parts, 2-15 parts of fly ash, 0-15 par...

Examples

Embodiment Construction

[0016] A Yangtze River pebble refractory brick, made of the following materials (kg): Yangtze River pebble 20, coal slime 32, boehmite 20, magnesite tailings 18, spinel 12, silica powder 17, and vanadium iron slag 21 , Andalusite 18, Furnace Ash 20, Bauxite 30, Phyllite 15, Sulfite Pulp 10, Yellow River Silt 12.

[0017] A method for preparing Yangtze River pebble refractory bricks consists of the following steps:

[0018] (1) Mix the Yangtze River pebbles, silica powder and andalusite evenly, crush them, pass through an 80-mesh sieve, add 40% sodium carbonate and 35% sodium nitrate equivalent to the mass of the mixed powder, dry ball milling at 1000r / min for 15min, and then Calcined at 960°C for 2.5h and cooled to room temperature;

[0019] (2) Mix boehmite, magnesite tailings and spinel evenly, crush them, pass through a 100-mesh sieve, add the calcined powder in step (1), mix well, and then add 55% sulfuric acid equivalent to the mass of the mixed powder Sodium and 20% sodium ch...

Technical field

[0001] The invention relates to a Yangtze River pebble refractory brick and a preparation method thereof, belonging to the field of refractories. Background technique

[0002] Refractory brick is a kind of building material brick, and its properties are the same as its name, "refractory". It is a refractory made of refractory clay or other refractory materials, which can withstand various physical and chemical changes and mechanical effects at high temperatures. Refractory bricks are not common in our lives, but they appear in some buildings that are closely related to our lives, such as house construction, kiln construction, and thermal equipment.

[0003] The patent number is: 201510494613.X. The invention patent discloses a foamed thermal insulation refractory brick produced from coal gangue and its preparation method. Its raw material composition is 40-60 parts of coal gangue and bauxite tailings in parts by weight. 30-50 parts, 2-15 parts of fly ash, 0-15 par...

Examples

Embodiment Construction

[0016] A Yangtze River pebble refractory brick, made of the following materials (kg): Yangtze River pebble 20, coal slime 32, boehmite 20, magnesite tailings 18, spinel 12, silica powder 17, and vanadium iron slag 21 , Andalusite 18, Furnace Ash 20, Bauxite 30, Phyllite 15, Sulfite Pulp 10, Yellow River Silt 12.

[0017] A method for preparing Yangtze River pebble refractory bricks consists of the following steps:

[0018] (1) Mix the Yangtze River pebbles, silica powder and andalusite evenly, crush them, pass through an 80-mesh sieve, add 40% sodium carbonate and 35% sodium nitrate equivalent to the mass of the mixed powder, dry ball milling at 1000r / min for 15min, and then Calcined at 960°C for 2.5h and cooled to room temperature;

[0019] (2) Mix boehmite, magnesite tailings and spinel evenly, crush them, pass through a 100-mesh sieve, add the calcined powder in step (1), mix well, and then add 55% sulfuric acid equivalent to the mass of the mixed powder Sodium and 20% sodium ch...