CN100450954C

CN100450954C - Making color paving tile by utilizing city domestic refuse

Info

Publication number: CN100450954C
Application number: CNB001134175A
Authority: CN
Inventors: 章亮庄
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-10
Filing date: 2000-05-10
Publication date: 2009-01-14
Anticipated expiration: 2020-05-10
Also published as: CN1322688A

Abstract

The present invention discloses a method for making a color paving tile by using city domestic rubbish. After rubbish is disinfected, dried and screened, the rubbish is crushed with other raw materials, is added with adhesive agents, and is carried out with even mixing, coloration, compaction and curing to form a product, wherein the adhesive agent composed of raw materials such as sodium sulphate, sodium silicate, magnesium oxide, magnesium chloride, etc. are carried out with a compounding ratio according to different ingredients of processed objects. The indexes of the paving tile made by the present invention reach a national standard. The paving tile has the advantages of low cost and the effects of changing waste into valuables and environmental protection, and can be widely applied.

Description

Utilize domestic waste to make color paving tile

The present invention relates to the treatment process of municipal wastes, relate to the manufacturing process of color paving tile simultaneously.

According to relevant report, China's industrial refuse and domestic refuse generation account for 27.15% of Asia ultimate production, account for 15.07% of whole world total amount, are equivalent to total generation of North America and European rubbish.At present, the generation of rubbish still with 10% speed increase, exceeds world's V-bar 1.76%, occupies first of the various countries.More than 400 city of China, existing 2/3 is surrounded by domestic refuse, solves the treatment process of domestic waste, has become very urgent task.That refuse treatment should be carried out is innoxious, subtract appearanceization and resource utilization.At present, handling the more general method of municipal wastes has three kinds on landfill, burning and compost, and these methods exist all that difficulty is big, expense is high, thoroughly, easily do not cause secondary pollution problems, are unfavorable for the comprehensive utilization of rubbish as renewable resource, cause certain waste.The more domestic report that treating refuse novel methods are arranged especially occurs now and then the reported in literature that domestic refuse is processed into material of construction (as pavior brick, floor tile, wall brick, cement etc.).For example, " coloured glass-containing paving tile " of on June 27th, 1988 application (application number: 88103811), " domestic waste is baked bricks, brickmaking technology " of application on October 21st, 1991 (notification number: 1060647) and " with the method for making brick with daily garbage " of applying on December 2nd, 1,991 1072915) etc. (notification number: patent documentation is in the problem that relates to this respect in varying degrees.The former characteristics are that soil in the rubbish and stone material composition are done base material, make the high temperature polymerization adhesives with cullet, make the glass floor tile by high-temperature calcination; In person's characteristics be with rubbish slaking, drying, back base and sinter clay brick into sorts, sieves; The latter's characteristics are to make raw material with clay, rubbish and coal ash, and high temperature sintering becomes wall brick, and three's weak point all is and must can becomes a useful person by high temperature sintering, has both expended the energy in the sintering process, again environment is caused secondary pollution.

The object of the present invention is to provide a kind of need not to make the novel method of color paving tile by the domestic waste that utilizes of sintering, environmentally safe.

The present invention can be achieved through the following technical solutions.

Rubbish is carried out disinfection, after dry, the screening, pulverizes with other raw materials, add tackiness agent, mixing, painted, compacting, maintenance and become color paving tile.Its proportioning raw materials is divided into two kinds of situations: for being the rubbish of major ingredient with the inorganics, get rubbish 45～55%, sandstone 25～35%, cement 15～20%, tackiness agent 1～5%; For being the rubbish of major ingredient, getting the material composition of rubbish 75～80%, 20～25%, first kind of tackiness agent of tackiness agent and be: sodium sulfate 10～20 grams, water glass 10～30 grams, magnesium oxide 10～50 grams with respect to the proportioning of 1kg cement with the organism; The raw material composition and the proportioning thereof of second kind of tackiness agent are: magnesium chloride 35～45%, magnesium oxide 55～65%.

Magnesium chloride in the tackiness agent can replace with sal epsom.Water glass 0.5～1.5% can be added in second kind of tackiness agent, and sodium sulfate, ammonium chloride, calcium chloride can be added in right amount.

The sieve size of all raw materials is 20～40 orders.The pressure of used hydraulic brick making machine is 100 tons, and pressure is 100～200kg/cm ²

Adopt the present invention, domestic refuse does not need external heating, calcining under the effect of tackiness agent, the spontaneous curing moulding, and organism is dewatered strongly in the curing molding process, and germ and parasite are killed.Finished product is colourless, tasteless, nontoxic, and pollutent is fixed in the goods firmly, and is free from environmental pollution; The ultimate compression strength of finished product is 197kg/cm ², folding strength is 25kg/cm ², frozen process experiment no change, water-intake rate 9.5% (48h).Every leading indicator all meets national JC446-91 standard code.

Owing to be the hard solid that hydration reaction generates, rubbish is finished with curing as stopping composition and dry when reaction, and goods are slight alkalinity and good water resisting property, so can not produce putrefactive phenomenon; Brickmaking technology itself is exactly a three wastes treatment project, when handling domestic refuse, does not add the material that environment is produced harm, and no waste water and gas and waste sludge discharge meet national environmental protection policy and developing direction.

China's domestic waste is divided into two big classes.One class is that fire coal is the rubbish of main energy sources, and based on coal ash (inorganics), the rubbish calorific value is low, and the small and medium-sized cities domestic refuse mostly belongs to this class; Another kind of is to be rubbish, the organic content height of main energy sources with the combustion gas, rubbish calorific value height, this class rubbish that the above big city of provincial capital mainly produces.At these two kinds of dissimilar domestic refuses, enumerate two different embodiment below and be described in further detail the present invention.

Embodiment one, be the domestic refuse of major ingredient, get rubbish 50%, add rubble 20% at inorganics, medium sand 10%, cement 17% is base-material, adds tackiness agent 3%, and wherein the proportioning raw materials of tackiness agent is: sodium sulfate 20%, water glass 30%, magnesium oxide 50%.After these three kinds of raw materials are mixed thoroughly, powdering, or use water dissolution, spread in the base-material.

Embodiment two, be the rubbish of major ingredient at organism, get domestic refuse 80%, tackiness agent 20%, wherein the composition proportion of tackiness agent is: magnesium chloride 38.5%, magnesium oxide 60%, water glass 0.9%, add raw materials such as sodium sulfate 0.10%, ammonium chloride 0.20%, calcium chloride 0.30% in addition, mix powdering or water thoroughly and dissolve evenly and be sprinkled in the garbage raw material.

No matter be embodiment 1 or embodiment 2, fetch domestic refuse after, all use disinfection by chlorine dioxide, deodorizing, useful thing such as metal, plastics, glassine paper, timber is reclaimed, dry then, pulverize.When the invention process is dry, adopt cylindrical drier, after inserting other raw materials, pulverize with impact grinder, utilize the Portland cement stirrer of forced action type that raw material stirring is even again, after lining is painted, suppress with base-material, the hydraulic brick making machine that adopts, pressure is 100 tons, pressure is 100～200kg/cm ², after the goods demoulding, enter preserving period, indoor maintenance 24 hours, outdoor water seasoning is after 28 days, and finished product is made and is finished.

Claims

1, a kind of method of utilizing domestic waste to make color paving tile, it is characterized in that with rubbish carry out disinfection, after dry, the screening, pulverize with other raw materials, add tackiness agent, mixing, painted, compacting, maintenance and become goods, its proportioning raw materials is divided into two kinds of situations: for being the rubbish of major ingredient with the inorganics, get rubbish 45-55%, sandstone 25-35%, cement 15-20%, tackiness agent 1-5%; For being the rubbish of major ingredient, get rubbish 75-80%, tackiness agent 20-25%, the material composition of first kind of tackiness agent and be: sodium sulfate 10-20 gram, water glass 10-30 gram, magnesium oxide 10-50 gram with respect to the proportioning of 1kg cement with the organism; The raw material composition and the proportioning thereof of second kind of tackiness agent are: magnesium chloride 35-45%, magnesium oxide 55-65%.

2, method according to claim 1 is characterized in that magnesium chloride can replace with sal epsom in the tackiness agent.

3, method according to claim 1 and 2 is characterized in that can adding water glass 0.5-1.5% in second kind of tackiness agent.

4, method according to claim 1 and 2 is characterized in that also can adding in second kind of tackiness agent 0.10% sodium sulfate, ammonium chloride 0.20%, calcium chloride 0.30%.

5, method according to claim 1 and 2, the sieve size that it is characterized in that above-mentioned raw materials is the 20-40 order.

6, according to the described method of claim 1, it is characterized in that adopting hydraulic brick making machine in the described pressing step, its pressure is 100 tons, pressure is 100-200kg/cm ².