JPH0260737A - Production of gatepost by utilization of waste material - Google Patents

Abstract

PURPOSE:To obtain an effective substance such as a gatepost or a pavement block by applying solidifying treatment to a powdery waste material. CONSTITUTION:A waste material such as pulverized slag, sludge or cinders is gathered to be mixed by a mixer and a binder consisting of a curing agent and sodium silicate is thrown in the mixer to be kneaded with the waste material while the kneaded mixture is injected in a mold having a definite shape to form a core material part. A kneaded substance prepared by mixing a polyester resin with a decorative stone material such as powdery or granular marble, granite or brick is applied to the periphery of the core material part to mold a surface member to obtain a molded product such as a gatepost or a pavement block developing the stone grain of marble, granite or brick. The curing agent is composed of a mixture consisting of silicon dioxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide and sulfur trioxide and the waste material is strongly bonded mutually by the binder and there is no possibility of elution due to rainwater and environmental contamination.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for treating industrial waste such as sludge from factory wastewater, ore sand from foundry manufacturing processes, and general waste such as cinders from local governments. .

(Conventional Technique #) Regarding the above-mentioned industrial and general waste treatment methods, certain treatment standards have been established by the ``Waste Management Law,'' and efforts are being made to preserve the living environment and maintain public health.

However, given the current situation where a huge amount of diverse waste is being generated and the construction of new treatment plants is strongly opposed by local residents, the treatment system has not been able to keep up with this, and a chronic lack of treatment capacity has become a problem. situation.

For this reason, there are countless examples of illegal dumping in mountains, gravel pits, etc. However, when illegal dumping occurs in this way, toxic substances permeate deep into the ground along with rainwater and enter the groundwater. This poses a serious problem in that it causes harm to the health and living environment of the general population.

(Problems to be Solved by the Invention) Therefore, as a result of extensive research into the treatment of these wastes, the present inventor focused on the characteristics of waste, and by applying appropriate solidification treatment to powdery waste, the gatepost The main aim is to eliminate the above-mentioned problems.

(Means for Solving the Problems) In this method of manufacturing gateposts, etc. using waste, first, wastes such as powdered slag, sludge, cinders, etc. are collected and mixed in a mixer or the like. Then, a binder consisting of a hardening agent and sodium silicate is added and kneaded, and this is put into a mold of a certain shape to form a core part.

Next, powdered or granular marble,
A kneaded mixture of decorative stones such as granite and bricks mixed with polyester resin is bent to form surface members, such as gateposts and paving stone blocks with exposed stone textures such as marble, granite and bricks. It is characterized by obtaining goods.

(Function) A binder consisting of a hardening agent and sodium silicate binds powdered slag,
It strongly binds sludge and burnt waste to each other, forms it into a core part of a certain shape, and also works to prevent harmful substances from leaching out from inside.

In addition, the powdered or granular marble and the surface material in the polyester resin not only cover up this core material but also expose the stone texture of the marble, forming beautifully decorated gateposts, paving stone blocks, etc. to work.

Additionally, this polyester resin is resistant to ultraviolet rays and works to improve weather resistance.

(Results) The present invention based on the above configuration can solidify waste materials such as slag, sludge, and cinders that were conventionally disposed of, so a hugely large treatment plant for disposal is not required. This will be an important means of solving the problem of waste disposal, which has been suffering from a chronic lack of capacity. Moreover, compared to conventional treatment methods for managed waste that require enormous equipment costs, the economic benefits are extremely large.

In addition, since the waste is strongly bound together by the binder,
There is no need to worry about leaching from rainwater, etc., and there is no need to worry about environmental pollution.

Furthermore, since waste is actively used as useful materials such as gateposts, it is included in the recycling process, leading to the effective use of natural resources, and it also has the decorative effect of stone materials such as marble and granite. Because it is a product, it is possible to obtain products with high added value.

(Example) We collected 700 kg of dehydrated sludge from an aluminum field, 100 kg of slag from an automobile foundry, and 100 kg of construction waste husks from local governments, and mixed them in a mixer for approximately 50 kg.
Mixed for about a minute. Next, the curing agent and sodium silicate were mixed together for 14 hours.
45 kg were added at a ratio of 3 and kneaded for about 20 minutes while adjusting the viscosity with some water. And this is 30X30
The mixture was filled into a prismatic molding frame of 140 cm x 140 cm, pressed from above with a hydraulic press to increase the density, and then left in a dry room for 24 hours to cure and solidify to obtain a core material. The curing agent at this time was silicon dioxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide, and sulfur dioxide, respectively, in a ratio of 17.7:6.4:2°6:59.4:1. O:
A mixture of 11.8 and 11.8 was used.

Next, a board of pre-hardened powdered marble was laid under this core material, and a molded frame shaped like a gatepost was placed around it.
A kneaded mixture of powdered marble and polyester in a ratio of 9:1 was filled into the container while removing air with a vibrator, and the mixture was left to stand for 30 minutes to cure and harden to obtain a surface member.

After solidification was completed, the surface was polished with sound paper, revealing the marble texture and resulting in a beautifully decorated gatepost.

When this product was subjected to a hazardous substance elution test (according to Environment Agency Notification No. 13 of 1948), good results were obtained with no risk of environmental pollution, as shown in the table below.

plan a result

Claims (1)

[Scope of Claims] 1) Powdered waste such as slag, sludge, cinders, etc. is mixed in a mixer, etc., and a curing agent and a caking agent consisting of sodium silicate are added thereto and kneaded. A core material is formed by inserting it into a shaped material, and then powdered or granular marble, etc. are placed around this core material.
Forming a surface member by surrounding a kneaded mixture of decorative stone such as granite with polyester resin to obtain molded products such as gateposts and paving stone blocks with exposed stone textures such as marble and granite. A method for manufacturing gateposts, etc. using waste material, characterized by: 2) The method for producing gate posts and the like by utilizing waste as claimed in claim 1, wherein the hardening agent is a mixture of silicon dioxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide, and sulfur trioxide.