CN104591772A - Porous brick preparation method - Google Patents

Abstract

The present invention discloses a porous brick preparation method, which comprises: conveying high-phosphorus hematite tailings, kaolin and bentonite into a high-speed centrifugal jet mill according to a certain ratio, crushing into particles with a particle size of 48 [mu]m, uniformly mixing the obtained particles and fly ash to obtain mixture powder, adding water, stirring for 30 min to obtain a mixed slurry, placing into a mold, carrying out vibration molding, standing for 3 h, demolding to obtain a brick billet, carrying out standing curing for 2 days, drying for 2 h at a temperature of 450 DEG C, placing onto a pad plate through a vacuum adsorber, conveying the dried brick billet and the pad plate into a roll table kiln, and firing for 1 h at a temperature of 1200 DEG C to obtain the porous brick. According to the present invention, the high-phosphorus hematite tailings is adopted as the main raw material to prepare the porous brick, and is the industrial waste residue ore, such that the raw material cost is low; the preparation process is simple; and the compressive strength of the prepared porous brick is more than or equal to 25 MPa, and the water absorption of the prepared porous brick is 18%.

Description

The preparation method of perforated brick

Technical field

The present invention relates to building brick manufacturing technology field, especially a kind of preparation method of perforated brick.

Background technology

Perforated brick is the wherein a kind of of building brick, is applicable to the weight bearing area of brick mix structure.

Tailings of high phosphorus hematite is that high-phosphorus hematite stone reclaims the waste residue after iron ore concentrate through fragmentation, ore grinding, centrifugal classification, high intensity magnetic separation, if will be reclaimed, the requirement of its recovery technology is high, cost is large; And due to its iron-holder high, in addition also containing the component materials that can pollute environment, caused waste if discard to be not only, also can pollute surrounding environment.

Summary of the invention

The invention provides a kind of preparation method of perforated brick, the method makes tailings of high phosphorus hematite be fully used, neither cause waste, also can not cause environmental pollution, the outward appearance of simultaneously obtained perforated brick and performance reach the national standard of GB13544-2000 sintered perforated brick.

For solving the problems of the technologies described above, the technical solution used in the present invention is:

A preparation method for perforated brick, adopts by the raw material production of following parts by weight: tailings of high phosphorus hematite 75 parts, kaolin 7 parts, wilkinite 8 parts and 10 parts, flyash;

Its preparation method comprises the following steps:

A, first tailings of high phosphorus hematite, kaolin, wilkinite are sent into that to be crushed to particle diameter in high speed centrifugation micronizer mill be 48 μm by a certain percentage, mix with flyash again, obtain mixture powder, add the water accounting for described mixture opaque amount 10%, carry out stirring 30min, obtain mixed slurry;

B, the described mixed slurry obtained is put into mould vibratory compaction, leave standstill 3h, the demoulding, obtains adobe, then leaves standstill maintenance 2 days;

C, by described adobe first dry 2h at 450 DEG C, by vacuum absorber, described adobe is put on backing plate again, the described adobe be placed on described backing plate is sent in roller way kiln together with described backing plate and fires with the temperature of 1200 DEG C, fire 1h, obtain this perforated brick.

Owing to have employed technique scheme, compared with prior art, the beneficial effect had is in the present invention:

The present invention is that main raw material prepares perforated brick with tailings of high phosphorus hematite, and high-phosphorus hematite tail is industrial residue ore deposit, so its raw materials cost is low, preparation technology is simple, and the ultimate compression strength of its obtained perforated brick is more than 25Mpa, and water-intake rate is 18%.

Embodiment

The raw materials of perforated brick is: tailings of high phosphorus hematite 75 tons, kaolin 7 tons, wilkinite 8 tons, 10 tons, flyash;

Its preparation method comprises the following steps:

A, first 75 tons of tailings of high phosphorus hematite, 7 tons of kaolin, 8 tons of wilkinites are sent into be crushed to particle diameter in high speed centrifugation micronizer mills be 48 μm, mix with 10 tons of flyash again, obtain mixture powder, add 10 tons of water, carry out stirring 30min, obtain mixed slurry;

B, the described mixed slurry obtained is put into mould vibratory compaction, leave standstill 3h, the demoulding, obtains adobe, then leaves standstill maintenance 2 days;

C, first by described adobe dry 2h at 450 DEG C, then by vacuum absorber, described adobe is put on backing plate, the described adobe be placed on described backing plate is sent in roller way kiln together with described backing plate and fires with the temperature of 1200 DEG C, fire 1h, obtain this perforated brick.

Claims (1)

1. a preparation method for perforated brick, is characterized in that adopting the raw material production by following parts by weight: tailings of high phosphorus hematite 75 parts, kaolin 7 parts, wilkinite 8 parts and 10 parts, flyash;

Its preparation method comprises the following steps:

A, first tailings of high phosphorus hematite, kaolin, wilkinite are sent into that to be crushed to particle diameter in high speed centrifugation micronizer mill be 48 μm by a certain percentage, mix with flyash again, obtain mixture powder, add the water accounting for described mixture opaque amount 10%, carry out stirring 30min, obtain mixed slurry;

B, the described mixed slurry obtained is put into mould vibratory compaction, leave standstill 3h, the demoulding, obtains adobe, then leaves standstill maintenance 2 days;

C, by described adobe first dry 2h at 450 DEG C, by vacuum absorber, described adobe is put on backing plate again, the described adobe be placed on described backing plate is sent in roller way kiln together with described backing plate and fires with the temperature of 1200 DEG C, fire 1h, obtain this perforated brick.