JP3364158B2 - Production line for concrete products using recycled industrial waste - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fired ash, fly ash, fired residue, blast furnace slab, sludge, paper sludge, waste glass, construction waste, volcanic ash, and other industrial waste. In the industry, products (referred to as industrial wastes in this specification) can be recycled as building materials such as tiles, bricks, interlocking, pavement brick blocks, etc., or as raw materials for general cement products such as tetrapods and fish reefs. The present invention relates to a concrete product using recycled waste and a method for producing the same. 2. Description of the Related Art Conventionally, landfills have been generally used as a method for treating industrial wastes described above. A resin sheet is spread over the bottom of an excavated landfill hole to form a high-level waste in industrial wastes. The structure prevents harmful substances, such as PCBs and heavy metals, contained at a certain concentration from seeping into the ground. [0003] However, in the above method, the disposal site suitable for landfill is limited, and the treatment for preventing leaching is not completely safe. There was a danger that environmental pollution, such as groundwater pollution and river pollution, would increase. SUMMARY OF THE INVENTION The present invention is based on the above-mentioned prior art, and it is difficult to secure a landfill disposal site. A waste treatment agent, water, and cement for crushing industrial waste to prevent the harmful substances contained in the industrial waste from being eluted from the second crushed body, aggregate, and molded concrete product; If necessary, add a cement admixture to the kneading machine and knead it, or do not elute harmful substances contained in industrial waste from crushed industrial waste, aggregate, and molded concrete products. The waste treatment agent and water to be put into the primary kneader and kneaded, and the primary kneading material and cement, if necessary, water and cement admixture are put into the secondary kneader and kneaded. Kneading material or secondary kneading of the latter By filling a material into a mold and molding a concrete product, industrial waste can be used as a concrete product that is safely recycled and used, thereby solving the above problems. An embodiment of the present invention will be described below with reference to the drawings. In a production line 1 of a concrete product A using recycled industrial waste W, FIG.
As shown in the figure, the primary processing unit 1a for crushing the industrial wastes W,
Crushed industrial waste W, binder solidifying agent, coagulant,
The secondary processing unit 1b kneads a waste treatment agent such as a heavy metal stabilizer, cement, and the like, and a tertiary processing unit 1c that forms a kneaded material from the secondary processing unit 1b. First, in the primary treatment section 1a, a stock hopper 2 for industrial waste W, a dryer 3 for industrial waste W, a stock hopper 4 for industrial waste W in a dry state, It comprises a crusher 5 for industrial waste W and a sieve 6 for crushed industrial waste W. next,
In the secondary processing unit 1b, a crushed material stock hopper 10 of the industrial waste W carried out from the primary processing unit 1a, an aggregate stock hopper 11 such as sand and gravel, a binder solidifying agent,
Waste treatment agents such as coagulants and heavy metal stabilizers Stock hopper 12, water stock hopper 13, and each stock hopper
Primary kneader 14, pulverized material, aggregate, waste treatment agent and water supplied from 10, 11, 12, 13 and cement stock hopper 20, and cement admixture stock hopper such as water glass
21, pigment stock hopper 22, water stock hopper
23, and a secondary kneader 24 of cement, a cement admixture, a pigment, water and a primary kneading material, which are supplied from the stock hoppers 20, 21, 22, 23 and the primary kneading machine 14. In the secondary processing section 1b, the pulverized material stock hopper 10, the aggregate stock hopper 11, the waste treatment agent stock hopper 12, the cement stock hopper 20, the cement admixture without using the primary kneader 14. Stock hopper
21, pigment stock hopper 22 and water stock hopper 23
, Various raw materials are directly supplied to the secondary kneader 24. Next, the tertiary processing section 1c is constituted by a press 30 of the secondary kneading material from the secondary kneading machine 24 of the secondary processing section 1b. Incidentally , each raw material may be directly fed to the secondary kneader 24 from the crushed material stock hopper 10, the aggregate stock hopper 11, and the waste treatment agent stock hopper 12.
Also, a plurality of secondary kneaders 24 in the secondary processing section 1b are provided, and a pigment stock hopper 22 of a plurality of colors is provided to prepare a secondary kneaded material of a plurality of colors. as it is stacked above, and the like to press molded concrete product a was filled in a mold of a press molding machine 30. Next, a method of manufacturing a concrete product by recycling industrial wastes according to the present invention will be described. As a first step, as shown in FIGS. 2 and 3 , the industrial waste W supplied into the stock hopper 2 is supplied to the dryer 3 for each fixed amount, and the industrial waste W is dried. Thereafter, the industrial waste W in a dry state is put into the stock hopper 4, and the industrial waste W is supplied to the crusher 5 for each fixed amount and crushed, and the industrial waste W crushed by the sieve 6 is used. And foreign matters are removed. If the industrial wastes W are already in a dry state, the drying step is omitted and the process goes directly to the pulverizing step. In the second step, as shown in FIG. 2 , a crushed product of industrial waste W is put into a stock hopper 10, and a stock hopper 10, an aggregate stock hopper 11, a waste treating agent stock hopper 12, Cement stock hopper 2
0, Industrial wastes W, aggregates, waste treatment agents, cement and water, and cement admixture, if necessary, from the cement admixture stock hopper 21 and the water stock hopper 23 into the secondary kneader 24 in appropriate amounts. Or kneading at a time, or kneading or kneading in two or more portions is repeated. Or Figure 3
As shown in the figure, a crushed product of the industrial waste W is put into the stock hopper 10, and the stock hopper 10, the aggregate stock hopper 11, the waste treating agent stock hopper 12, and the water stock hopper 13 , Industrial waste W,
After an appropriate amount of aggregate, waste treating agent and water are charged and kneaded, the primary kneading material is supplied from the primary kneader 14, the cement stock hopper 20, the cement admixture stock hopper 21 and the water stock hopper 23 into the secondary kneader 24. Then, cement according to the amount thereof, an admixture and water if necessary are added, and the mixture is secondarily kneaded. At the time of kneading, the crushed material of the industrial waste W and the waste treatment agent are uniformly mixed and chemically reacted to confine harmful substances contained in the industrial waste W. When coloring the former kneading material or the latter secondary kneading material, the pigment is put into the secondary kneading machine 24 from the pigment stock hopper 22 and kneaded. As a third step, as shown in FIGS. 2 and 3 , a kneading material or a secondary kneading material is filled into a mold of a press molding machine 30 and press-molded. The concrete product A is molded. Industrial waste W that cannot be solidified by cement alone is also solidified by using and mixing a cement and a waste treatment agent.
From concrete product A after molding to industrial waste W
Hazardous substances contained do not elute. In the case of molding the colored concrete product A, the uncolored kneaded material and the colored kneaded material are filled into the mold in a laminating state in the third step by making the former considerably thicker. [0010] In short, the present invention relates to a process for industrial waste W.
Tok hopper 2, Industrial waste W dryer 3, Dry state
Industrial waste W stock hopper 4, industrial waste
Crusher 5 for class W and sieve for crushed industrial waste W
A primary processing unit 1a composed of a machine 6;
Crushed stock hopper of industrial waste W taken out
10, Aggregate stock hopper such as sand and gravel 11, Binder
Waste treatment agents such as hardeners, coagulants, and heavy metal stabilizers
Hopper 12, water stock hopper 13, each stock hopper
Primary kneader for each material input from pars 10, 11, 12, 13
14, cement stock hopper 20, cement such as water glass
G admixture stock hopper 21, pigment stock hopper 2
2, water stock hopper 23, and each stock hopper 2
0,21,22,23 and each material input from primary kneader 14
A secondary processing unit 1b composed of a secondary kneader 24,
The secondary kneading material from the secondary kneading machine 24 of the section 1b
And a tertiary processing unit 1c.
A plurality of secondary kneaders 24, and pigments of multiple colors
Since the stock hopper 22 was installed , the production line 1
When the concrete product A is manufactured by the method, the harmful substance contained in the industrial waste W can be contained in the concrete product A, and the harmful substance contained in the concrete product A can be prevented from being eluted during use of the concrete product A. Concrete product A that is made and therefore does not adversely affect the surrounding environment
Industrial wastes W can be recycled and used as raw materials for the wastewater. [0011] In addition, since cement reacts with water and hardens, crushed industrial waste W, aggregate, waste treating agent,
If all materials such as water, cement, cement admixture, and pigment are kneaded at once, there is a high possibility that it becomes difficult to sufficiently mix the crushed product of the industrial waste W and the waste treatment agent, In the production line 1, the dried industrial waste W is pulverized, and then the pulverized material, aggregate, waste treating agent and water are kneaded into a primary kneaded material. If so, water and a cement admixture are kneaded into a secondary kneading material, and the secondary kneading material is filled into a mold and molded.
Then , after the harmful substances contained in the industrial waste W and the waste treatment agent are sufficiently chemically reacted during the primary kneading, the secondary kneading is performed, so that the contained harmful substances can be more reliably contained, Elution of the contained harmful substances can be prevented more reliably, and the industrial waste W can be recycled and used more safely. Further, the concrete product A in the state of use
Has a manufacturing line because only the front side is exposed to the outside.
In Step 1, the kneaded material or the secondary kneaded material to which the pigment is added is kneaded separately from the uncolored kneaded material or the secondary kneaded material, and the uncolored kneaded material or the secondary kneaded material is filled in a mold. Filling the mold with the colored kneading material or the secondary kneading material and molding the concrete product A whose surface side is colored can reduce the amount of the pigment to be used to the minimum necessary, and thus the colored The practical effect is remarkable, for example, the production cost of the concrete product A can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a production line for a concrete product according to the present invention. FIG. 2 is a schematic view of the production line of FIG. 1 in a case where all the raw materials are kneaded at one place to mold a concrete product. 3 is a schematic view of the production line of FIG. 1 in a case where a raw material is divided into two stages and kneaded at two locations to mold a concrete product. [Description of Signs ] 1a Primary processing section 1b Secondary processing section 1c Tertiary processing section 2 Stock hopper 3 Dryer 4 Industrial waste stock hopper 5 Crusher 6 Sieve machine 10 Crushed stock hopper 11 Aggregate stock hopper 12 Waste Treatment agent stock hopper 13 Water stock hopper 14 Primary kneader 20 Cement stock hopper 21 Cement admixture stock hopper 22 Pigment stock hopper 23 Water stock hopper 24 Secondary kneader 30 Press machine W Industrial wastes

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) C04B 28/02 C04B 18/04 B09B 3/00 B28B 3/02 B28C 1/00-9/04

Claims (1)

(57) [Claims] [Claim 1] Stock hopper for industrial waste, industrial
Waste dryers, dry industrial waste stock
Hoppers, industrial waste crushers, and crushed industries
A primary processing unit composed of a waste sieving machine, and a crushed body waste of industrial waste discharged from the primary processing unit.
Hoppers, aggregate hoppers for sand, gravel, etc.
Waste treatment of indifier, coagulant, heavy metal stabilizer, etc.
Stock hopper, water stock hopper, each stock
Primary kneader for each material input from hopper, cement
Stock hopper, water glass, etc.
Kuhopper, pigment stock hopper, water stock hopper
-And from each stock hopper and primary kneader
Processing unit comprising a secondary kneading machine for each material, and a press for secondary kneading material from the secondary kneading machine of the secondary processing unit
And a plurality of secondary kneaders in the secondary processing section.
Characterized in that a number-color pigment stock hopper <br/> industrial wastes of concrete products using recycled
Production line .