KR200181602Y1 - Sludge containing block - Google Patents

Abstract

The present invention is a block produced directly from paper mill sludge, which is an industrial waste produced in a paper mill, without the process of burning, calcining, drying, etc., which does not dry paper sludge, cement, quicklime and ammonium chloride, sand, loess, reinforcement. The present invention relates to a block prepared by mixing a resin for resin, a waterproof resin, etc. with a mixer, and then compressing and molding the resin.

Description

Block containing paper sludge {Sludge containing Block}

The present invention relates to a block made of paper sludge, cement, sand, etc., which are mainly composed of short fibers and minerals generated in a paper mill.

Paper sludge is a major source of environmental pollution as industrial waste, mainly composed of fine short fibers, kaolin and talc, which are not recovered by the paper screen. Therefore, manufacturing recycled paper sludge, which is an industrial waste, as a building material is a nationally desirable environmental and resource recycling.

Conventionally, in manufacturing bricks using paper sludge, etc., paper sludge is burned to produce lightweight aggregate and used as a cement brick filler, or paper sludge or sludge incineration ash is formed by clay and calcined at high temperature to make brick. However, this method burns the paper sludge containing a large amount of water, thereby generating a lot of energy and air pollution in the sludge combustion.

Korean Patent Publication No. 85-7970 discloses a method for producing lightweight aggregate by dewatering sludge moisture at 50-59% and mixing it with a resin to obtain a lightweight aggregate having a diameter of 5-20 mm and coating it with latex. However, this technique has a problem in the process of making paper sludge back into blocks after making light aggregate.

In Korean Patent Publication No. 94-23826, a mixture of methyl cellulose is prepared while stirring dried paper sludge, cement, and sand, and then mixed with a mixture such as ethylene-vinyl acetate copolymer, and then mixed with sodium dichromate. Although a method of manufacturing a building block by compressing has been proposed, there is a problem of drying the paper sludge and the use of heavy chromic acid as a heavy metal.

Korean Patent Laid-Open Publication No. 1995953625 discloses a method of making artificial lightweight aggregate by kneading paper sludge, loess or clay, frying ash, water, etc., followed by extrusion molding, drying, and calcining at 1,100 ° C. The technique has a problem of firing paper sludge mixed extrudates at high temperatures.

Korean Patent Application Publication No. 95-17859 discloses a method for manufacturing artificial lightweight aggregate, characterized in that it is mixed with a clay clay as a main raw material, paper sludge and / or paper sludge incineration ash as a raw material, mixed and molded, and fired at a high temperature. However, in the case of this technique there is a problem of baking the paper sludge mixed molding at a high temperature.

Since the conventional brick or block is mainly composed of sand, stone powder, cement, and water, the weight of the manufactured brick and block has a high density of about 2000 g, which causes a problem of significantly increasing its own load when used as a building material.

Conventional bricks or blocks that do not contain paper sludge, etc., because there is little insulation effect, there is a problem that the thermal insulation of the building is less when used as a building material.

The present invention was developed to solve the problems of the prior art as described above, the first object of the present invention is a block manufactured directly without going through the process of burning, firing, drying, such as paper waste sludge produced in the paper mill To provide, the second material is to provide a brick and block for building materials having a lightweight insulation effect.

1 is a perspective view of the present invention

2 is a front view of the present invention

The present invention is a lightweight block manufactured directly without the process of burning, firing, drying, etc. of paper waste, which is an industrial waste generated in a paper mill, and does not dry paper sludge, cement, quicklime and ammonium chloride, sand, loess, It is characterized by providing a block produced by mixing the reinforcing resin, water-resistant resin, etc. with a mixer and then compression molding and drying it.

The present invention is described in more detail as follows.

The present invention is a lightweight block manufactured directly without going through the process of burning, firing, drying, etc. of the industrial waste produced in the paper mill, 20-80 parts by weight of undried paper sludge, 10-50 parts by weight of cement , 1-15 parts by weight of quicklime and / or ammonium chloride, 1-10 parts by weight of ammonium chloride, 5-40 parts by weight of sand, 1-10 parts by weight of ocher, 1-5 parts by weight of reinforcing resin, 1-10 parts by weight of waterproof The present invention relates to a block and a method for producing the same, wherein the resin and / or latex are mixed with a mixer, pulverized, compressed and then dried.

In order to manufacture the light weight block of this invention, it is suitable that the moisture content of the non-dried paper sludge is 30-100%. It is especially effective that the moisture content is 50-80%. If the moisture content is high, the water content of the mixture, such as sludge, cement, sand, reinforcing resin, waterproof resin, etc. is increased, which causes the problem that the additives are separated with water in the molding process, and the compressive strength of the produced block is lowered. If the moisture content is 30% or less, a process of artificially removing water from sludge generated in the paper mill is required, and a problem of adding a certain amount of water in the mixing process such as sludge, cement, sand, reinforcing resin, and waterproof resin There is this. By producing the blocks according to the invention, the undried paper sludge is 30 to 150 parts by weight, more particularly 40 to 90 parts by weight. If the content of paper sludge is too high, the strength and water resistance of the produced block is lowered, if the content of the sludge is too low, the consumption efficiency of the sludge is lowered.

In order to manufacture the block according to the present invention, portland cement or the like may be used as a general cement used in general brick production, and the amount of use thereof is appropriately 5-50 parts by weight, and particularly 10-30 parts by weight. . If the amount of cement used is too low, the strength of the produced blocks is lowered, which brings about strength problems in use as building materials.

In order to produce the block according to the present invention, sand of about 40 to 120 mesh is suitable, in particular, about 70 to 90 mesh of sand is better. The use amount of sand is suitable from 5 to 40 parts by weight, in particular 10 to 30 parts by weight is more effective. If the amount of sand is too large, the strength of the produced block is lowered.

In order to produce the block of the present invention, the addition amount of quicklime and ammonium chloride is suitable in 2 to 20 parts by weight, in particular 5 to 10 parts by weight is more effective. The addition of quicklime and ammonium chloride accelerates the drying and curing of the mixture, significantly improving the strength of the brick after curing.

In order to manufacture the block according to the present invention, it is suitable to use the reinforcing resin 0.1 to 10 parts by weight, particularly 1-5 parts by weight is more effective. As the reinforcing resin, melamine formaldehyde resin, melamine urea formaldehyde resin, melamine epoxy resin, polyacrylamide resin, polyacrylamide copolymer and the like may be used. If the reinforcing resin is used in an amount of 1 part by weight or less, there is a problem in that the strength of the produced block is used for building materials.

In order to produce the block according to the present invention, it is suitable to use 1 to 10 parts by weight of ocher, in particular 1 to 5 parts by weight is more effective. By adding ocher, the color of the blocks or bricks produced is not a normal concrete color, but rather an ocher-colored product that gives people a friendly feeling. In addition, there is an advantage that can simultaneously provide the effect, such as far-infrared radiation emitted from loess.

In order to manufacture the block of the present invention, it is appropriate to use 0.1 to 10 parts by weight of the waterproof resin, and in particular 1 to 5 parts by weight is more effective. As the waterproof resin, natural latex, styrene butadiene latex, acrylonitrile butadiene latex, butadiene latex, methyl methacrylate homopolymer emulsion, methyl methacrylate copolymer emulsion, acrylic acid copolymer emulsion and the like can be used.

Hereinafter, the present invention will be described in more detail with reference to Examples.

Example 1

60 Kg of undried waste sludge (water content of 80% by weight) from the papermaking process, 25 Kg of cement, 20 Kg of sand, and 10 Kg of loess are mixed for 20 minutes in a 1000 rotating mixer per minute. The mixture is ground using a grinder to form a primary mixture. 5 kg of quicklime, 2 kg of water-soluble melamine resin (Daeyang Chemical, M85), 2 kg of ammonium chloride, and 2 kg of styrene-butadiene latex (Kumho Petrochemical, SBR362) were added to 115 kg of the first mixture, followed by mixing for 20 minutes. Extrude in the form. The extruded block is dried at 100 ° C. for 2 hours. The weight of the dried blocks was 850g, and the dry strength was 130 Kg / ㎠.

Example 2

65 Kg of undried waste sludge (water content of 80% by weight) produced in the papermaking process, 25 Kg of cement, 20 Kg of sand, 10 Kg of ocher, and 5 Kg of quicklime are mixed in a mixer for 20 minutes and then pulverized through a grinder. To 120 Kg of the ground primary mixture, 2 Kg of water-soluble melamine resin (Daeyang Chemical M85), 2 Kg of ammonium chloride, and 2 Kg of styrene-butadiene latex (Kumho Petrochemical SBR362) are added and mixed for 20 minutes in a mixer to form a secondary mixture. The tea mixture is extruded in block form using an extruder. The extruded bricks are dried at 100 ° C. for 2 hours. The weight of the dried block was 900g, and the dry strength was 125 Kg / ㎠.

Example 3

60 Kg of undried waste sludge (water content of 70% by weight), 25 Kg of cement, 23 Kg of sand and 7 Kg of loess generated in the papermaking process are mixed in a mixer for 20 minutes and then ground using a grinder to form a primary mixture. 2 kg of polyacrylamide (number average molecular weight 8500), 4 kg of quicklime, 4 kg of ammonium chloride, 2 kg of styrene-butadiene latex (Kumho Petrochemical SBR362) were added to 115 kg of the first mixture, followed by mixing for 20 minutes. Extrude. The extruded block is dried at 100 ° C. for 2 hours. The weight of the dried block was 953g, and the dry strength was 122 Kg / ㎠.

Example 4

60 Kg of undried waste sludge (water content of 70% by weight), 25 Kg of cement, 23 Kg of sand, and 5 Kg of loess generated in the papermaking process are mixed in a mixer for 20 minutes and then pulverized using a grinder to form a primary mixture. 3 kg of water-soluble melamine resin (Daeyang Chemical M85), 5 kg of quicklime, 5 kg of ammonium chloride, and 2 kg of styrene-butadiene latex (Kumho Petrochemical SBR362) were added to 115 kg of the first mixture, followed by mixing for 20 minutes. Extrude. The extruded block is dried at 100 ° C. for 2 hours. The weight of the dried blocks was 951 g, and the dry strength was 146 Kg / cm 2.

In order to compare the weight and strength of the lightweight block (brick) manufactured in Example 1-4 and the conventional block, the weight and strength of the block prepared in Comparative Example 1 were compared.

Comparative Example 1

120Kg of sand, 40Kg of cement, 40Kg of stone powder and 60Kg of water are mixed with a mixer, and then extruded in a block form using an extruder. The extruded blocks were dried at 100 ° C. for 2 hours. The weight of the dried blocks was 1970 Kg, and the dry strength was 142 Kg / cm 2.

The present invention provides a block produced directly from the papermaking sludge, which is an industrial waste produced in a paper mill, without undergoing combustion or firing, and the block including the paper sludge manufactured by the present invention has a weight that is half of a general block. It is possible to provide blocks or bricks for building materials, which are light weight and have excellent thermal insulation effect.

Claims (5)

20-80 parts undried paper sludge, 10-50 parts cement, 1-10 parts quicklime, 1-10 parts ammonium chloride, 5-40 parts sand, 1-10 parts loess, 1-5 parts A building material characterized in that it is manufactured by mixing, pulverizing, by weight of the reinforcing resin, 1-10 parts by weight of the waterproofing resin, and / or latex, etc., by compression molding and drying. The water content of the papermaking sludge is 30-100% by weight. The strength enhancing resin is melamine formalin resin, melamine urea formalin resin, melamine epoxy resin, acrylamide resin, acrylamide copolymer alone or a mixture of two or more kinds. The waterproofing resin according to claim 1, wherein the waterproof resin is natural latex, styrene butadiene latex, acrylonitrile butadiene latex, butadiene latex, methyl methacrylate homopolymer emulsion, methyl methacrylate copolymer emulsion, acrylic acid copolymer emulsion alone or a mixture of two or more kinds. that. The building material produced by the method of claim 1 is brick or block.