CN1325420C - Environment-protecting high pressure no-baking carbide residue brick and its making process - Google Patents

Abstract

The present invention discloses an environment-friendly non-baking carbide slag brick with high pressure, and a making method thereof. The carbide slag brick is prepared from the raw materials: 100 portions by weight of sandstone, 20 to 50 portions by weight of carbide slag, 10 to 30 portions by weight of solid phase adhesive, 0.2 to 0.7 portion by weight of liquid phase adhesive and 3 to 8 portions by weight of water; the present invention has the making method that the sandstone is ground into sand and is sieved, and the sandstone sand, the carbide slag and the solid phase adhesive are proportionally taken and are uniformly stirred and mixed; the liquid phase adhesive and the water are proportionally added, and the mixture is uniformly stirred and mixed; the mixture is placed in a mould and is pressed to form green bricks by a brick making machine, and the pressure is 40Mpa at least; the green bricks are demoulded, are cured and pass test, and finished products are obtained. The carbide slag brick has high intensity and high stability, the suitable raw material source is wide, the raw materials can be obtained easily, the raw materials can be obtained from local resources according to industrial waste, and telecommunication is not needed; the present invention has the advantages of simple production process, large brick making pressure, compact product structure, good brick quality, long service life and low cost.

Description

No-baking carbide residue brick and manufacture method thereof

Technical field

The present invention relates to a kind of building brick, relate in particular to a kind of no-baking carbide residue brick and manufacture method thereof.

Background technology

Clay brick has not met national industrial policies because of consuming a large amount of non-renewable land resourcess, seeks other alternative materials in the building materials industry one after another, and for example sandstone, coal gangue, flyash, phosphogypsum, carbide slag, casting slag etc. are produced building brick.But, because composition of raw materials or production technique are not that quality product is not good enough, be exactly that cost is higher, uneconomical economically.

Chinese patent disclosed " environment-protective baking-free brick and preparation method " (publication number CN 1272467A) is to mix by a certain percentage with cement, sand, stone flour and water, through brick pressing machine compression moulding under certain pressure, again through the steam-cured the finished product that become.Shortcoming is: this brick must use cement, comes down to concrete product, and must be steam-cured, complex process, cost height.

Chinese patent disclosed " pure industrial residue no-baked no-steamed building bearing brick and furring tile and preparation method thereof " (publication number CN 1093688A), be to be major ingredient with a certain proportion of flyash, slag, carbide slag, adding curing hardening accelerator mixes, by brick pressing machine compression moulding under 43.5Mpa pressure, become the finished product through maintenance again.Shortcoming is: the production scene is difficult to have simultaneously flyash, slag, three kinds of industrial wastes of carbide slag, collects, transports the raw materials cost height, causes the final cost height of brick, and the user is difficult to accept.

Summary of the invention

Purpose of the present invention provides a kind of no-baking carbide residue (cream) brick and manufacture method thereof.The raw material of this brick is easy to get, and production technique is simple, and the product strength height, quality is good, cost is low.

Technical solution of the present invention is:

A kind of no-baking carbide residue brick is made by the raw material of following weight ratio: 100 parts on sandstone, carbide slag 20-50 part, solid phase caking agent 10-30 part, liquid phase caking agent 0.2-0.7 part, water 3-8 part;

Described solid phase caking agent be in tricalcium silicate, aluminic acid four calcium, calcium oxide, yellow soda ash, lime carbonate, aluminum oxide, the silica flour any one or several arbitrarily;

Described liquid phase caking agent contains the component of following weight ratio: quartzy 1.8-2.2 part, feldspar 2.5-3.2 part, clay 1.2-1.7 part, vegetables oil 1.2-2.2 part, furfuryl resin 0.4-0.6 part.

This carbide residue brick is a solid brick, also can be holllow building block or Brick with blind hole.

The manufacture method of described no-baking carbide residue brick comprises the steps:

(1) sandstone is pulverized for sand and sieved;

(2) getting sandstone sand, carbide slag, solid adhesive in proportion mixes;

(3) add liquid phase caking agent and water in proportion, mix, left standstill 1-2 hour;

(4) compound is put in the mould, used brick press compression moulding, pressure 〉=40Mpa;

(5), or cover with plastic film with natural curing 10-21 after the adobe demoulding days, in add dry ice, control relative humidity＞20%, maintenance three days, being up to the standards is finished product.

The preparation method of described liquid phase caking agent comprises step:

1. quartz, feldspar, clay congruent melting are boiled and be liquid phase to naturally cool to normal temperature then;

2. add vegetables oil, furfuryl resin, mix.

With existing non-burning brick comparing, the invention has the advantages that: owing to use special caking agent, the intensity of brick is high and stable, and applicable raw materials wide is simple and easy to, and can gather materials on the spot according to industrial waste, need not long-distance transport; Production technique is simple, and brickmaking pressure is big, compact product structure, and the quality of brick is good, long service life, cost is low.

Carbide residue brick of the present invention, resistance to compression, anti-folding, freeze proof, (comprising anti-aging) meet no-firing brick 7.5-15 grade standard, all meets national standard on antiacid alkali, water tolerance, water-intake rate, radioactivity.Sample of the present invention is through " Sichuan Province's building material product quality supervision and test " center " is according to the JC422-1991 standard test, and every technical indicator is all qualified, sees table one for details.

Table one

Interventions Requested			Standard-required	Assay	Individual event is judged
						Intensity rank	Intensity rank		7.5 10 15	/	Intensity rank: 7.5 grades qualified
Ultimate compression strength (MPa)	On average refer to	7.5 10.0 15.0	8.2
				Little finger of toe	4.5 6.0 10.0		7.1
	Folding strength (MPa)	On average refer to	1.5 2.0 2.5					2.1
Minimum value				0.9 1.2 1.5	1.8
		Frost resistance	Freeze back ultimate compression strength rate of loss (%)				≤25	-5	Qualified
The destruction situation					Damage area is greater than 2500mm 2Or on the end face damage area greater than 2000mm 2No more than 1 of brick sample	No freezing
			Water tolerance [full water intensity (MPa)]				7.5 level: 〉=5.0	6.8		Qualified
Water-intake rate (%)						≤20			18		Qualified

Embodiment

One. preparation liquid phase caking agent

Get quartzy 2 parts, 3 parts of feldspars, clay by weight and mix in crucible for 1.5 parts, congruent melting is boiled and is liquid phase to naturally cool to normal temperature then, adds 2 parts of vegetables oil, 0.5 part of furfuryl resin again, mixes, and is standby.

Two. the system carbide residue brick

Prepare burden by following table two:

Table two

Batching	Sandstone	Carbide slag	The solid phase caking agent	The liquid phase caking agent	Water
						Embodiment 1	100 parts	25 parts	12 parts	0.25 part	3.2 part
Embodiment 2	100 parts	45 parts	25 parts	0.38 part	4.5 part
						Embodiment 3	100 parts	38 parts	18 parts	0.40 part	5.3 part
Embodiment 4	100 parts	42 parts	16 parts	0.52 part	7.2 part
						Embodiment 5	100 parts	48 parts	22 parts	0.65 part	6.8 part
Embodiment 6	100 parts	35 parts	28 parts	0.46 part	4.6 part
						Embodiment 7	100 parts	30 parts	15 parts	0.38 part	7.8 part
Embodiment 8	100 parts	40 parts	24 parts	0.55 part	4.9 part
						Embodiment 9	100 parts	33 parts	25 parts	0.60 part	5.4 part
Embodiment 10	100 parts	22 parts	17 parts	0.23 part	6.7 part

The proportioning umber is weight part among the foregoing description 1-10, and used solid phase caking agent is any one or a mixture several arbitrarily, arbitrary proportion in tricalcium silicate, aluminic acid four calcium, calcium oxide, yellow soda ash, lime carbonate, aluminum oxide, the silica flour; Sandstone should be pulverized earlier.The brickmaking step is:

Earlier sand is sieved;

Getting sand, carbide slag, solid phase caking agent in proportion mixes;

Add liquid phase caking agent and water more in proportion, mix, left standstill about 2 hours;

Compound is put in the mould, used brick press compression moulding,, can select 40-200 ton brick press for use, but must guarantee brickmaking pressure 〉=40Mpa according to the quantity of a brickmaking;

With natural curing 14-20 after the adobe demoulding days, curing time was looked weather condition (temperature, humidity) difference and is grasped flexibly, to inspect qualified being as the criterion by random samples; Also available plastic film covers, built-in dry ice, and control relative humidity＞20%, maintenance three days, being up to the standards is finished product.

Carbide residue brick of the present invention is avoided big area to dig adopting causing vegetation deterioration, has the meaning that prevents erosion, protects vegetation, can turn waste into wealth again, owing to without sintering, reduced the production of the three wastes, has saved the energy and land resources.Because main raw material is that carbide slag (cream) and sandstone cost are low, easily exploitation, the cost of carbide residue brick is also very low, has better economic and is worth.

Claims (5)

1. no-baking carbide residue brick is characterized in that being made by the raw material of following weight ratio:

100 parts on sandstone,

Carbide slag 20-50 part,

Solid phase caking agent 10-30 part,

Liquid phase caking agent 0.2-0.7 part,

Water 3-8 part;

Described solid phase caking agent be in tricalcium silicate, aluminic acid four calcium, calcium oxide, yellow soda ash, lime carbonate, aluminum oxide, the silica flour one or more;

Described liquid phase caking agent contains the component of following weight ratio:

Quartzy 1.8-2.2 part, feldspar 2.5-3.2 part, clay 1.2-1.7 part, vegetables oil 1.2-2.2 part, furfuryl resin 0.4-0.6 part;

Described liquid phase caking agent is to comprise the steps to prepare:

1. quartz, feldspar, clay congruent melting are boiled and be liquid phase to naturally cool to normal temperature then;

2. add vegetables oil, furfuryl resin, mix.

2. no-baking carbide residue brick according to claim 1 is characterized in that: this brick is solid brick or holllow building block or Brick with blind hole.

3. the manufacture method of the described no-baking carbide residue brick of claim 1 comprises the steps:

(1). pulverize sandstone for sand and sieve;

(2). get sandstone sand, carbide slag, solid phase caking agent in proportion and mix;

(3). add liquid phase caking agent and water in proportion, mix, left standstill 1-2 hour;

(4). compound is put in the mould, used brick press compression moulding, pressure 〉=40Mpa;

(5). the adobe demoulding, maintenance then, being up to the standards is finished product.

4. manufacture method according to claim 3 is characterized in that: described maintenance is natural curing 10-21 days.

5. manufacture method according to claim 3 is characterized in that: described maintenance is to cover with plastic film, in add dry ice, control relative humidity＞20%, maintenance 3 days.