KR100396390B1 - Manufacturing process of waste slaked lime as various materials - Google Patents

Abstract

The present invention relates to a method for producing a multi-use raw material for waste slaked lime.

Waste slaked lime discharged in large quantities with the development of the heavy chemical industry is not recycled, but is disposed of, and in the case of such waste treatment, it is mainly purchased and treated, thus not only burdening the processing cost, but also resulting lipids. And water pollution are becoming serious social problems. On the other hand, limestone in Korea is considered one of the resources which are not abundant, but it is also a problem with the development of the national economy due to its low utilization as a high value-added product.

The present invention has been invented to solve the above problems, the main subject of the invention is the sorting of crushed barley (Hell Stone), which is a kind of special minerals that can be mass-produced in Korea, and then pulverized it, which is a kind of industrial waste lime (or limestone) Mixing the dried (with less than 43% water content) at a ratio of 1: 2 (or more or less) and calcining at 800 ℃ or more, cooling to room temperature, After obtaining the particulate product, it can be used as a functional raw material for multi-use (bio cement, fertilizer raw material, soil improver raw material, health related raw material, living container raw material, fishery raw material raw material, etc.). It is possible to greatly contribute to the development of high value-added products by preventing pollution and recycling waste resources as functional new materials. will be.

Description

Manufacturing process of waste slaked lime as various materials

The present invention relates to a method for producing a multi-use raw material for waste slaked lime that enables recycling of waste slaked lime, which is a kind of industrial waste that can be obtained in a large amount from domestic heavy chemical businesses, as a functional raw material of a new high value-added product through a chemical treatment process. .

Limestone resources, one of the richest resources in Korea, have not been commercialized as high value-added products, and reprocessed waste slaked lime, which is a large amount of industrial sludge from heavy and chemical industries, is mixed with special minerals such as Hell Stone and fine powder. If it is made, it can be a new functional material that can express various colors according to its mixing ratio, and when mixed with materials that emit far infrared rays, its compound can be a unique and new functional raw material that can be used for various purposes. However, in the past, these waste resources, as well as waste limestone discharged in large quantities from industrial sites, are not recycled as functional materials, but are landfilled as industrial waste, resulting in overburden of landfill costs, as well as water and soil pollution. It is causing the pollution.

The present invention has been invented to solve the above problems, and the gist of the present invention is the waste hydrated lime (or limestone coarse), which is dried (less than 43% of water) by grinding and crushing the usual Hell Stone, which is a kind of special mineral. After mixing at a ratio of 1: 2 (above or below) and calcining at 800 ° C. or higher and cooling to room temperature, and then obtaining a fine particulate product through a fine grinding process and a classification process of 300 mesh or more, It can be used as a functional raw material for manufacturing high value-added products such as bio cement fertilizer raw materials, soil improver raw materials, health-related raw materials, living container raw materials and fishery raw materials.

1 is a process display of the present invention

* Explanation of symbols for main parts of the drawings

1- Elvan rock sorting process 2-Crushing mill 3- Waste slaked lime sorting process

4-drying process 5-mixing process 6-firing process

7-Cooling process 8-Crushing process 9-Classification process

10-finished process

First, the characteristics of the product to be developed using the functional raw material of the present invention will be described.

1) In the case of bio cement raw materials, yellow-red color is expressed according to the far-infrared effect possessed by special minerals (such as elvan) and the treatment process of waste slaked lime mixed with it. It can be applied to the wall like general cement, and also can be manufactured in the form of board, brick, and panel. In particular, it possesses a photocatalytic function under natural light by elements, thereby purifying indoor air, removing odors, and cultivating plants when growing flowers in pots.

In addition, the present invention performs an efficient control technique by complex mixing and fine mixing of the pulverization classification utilizing the fine particle design technique, and the theory of oxide synthesis from natural minerals as a technology for producing high functional fine particles utilizing the mechano-chemical effect occurring therein. Establishment, attempting to contact gas and liquid in accordance with all conditions and atmospheres, can produce a high-temperature firing process with a multipurpose material obtained by joining hydrophobic separation, and utilizes the effects on the human body and living body by the radiation far infrared wavelength. As it is a completely new functional material, the development is expected greatly according to the future use.

2) When used as fertilizer, this fertilizer uses waste lime as the main raw material. Ca and Mg, which are important ingredients, have the same properties as kali fertilizers and can be used as kali fertilizers. Its performance can be improved. In addition, according to the mixing of special minerals, the action of special ions contained therein can help the growth of plants. In addition, it is possible to slowly release active ingredients such as nitrogen and phosphorus in the livestock wastewater by powder engineering by special chemical treatment such as surface modification and porosity. Thus, since the substance itself is in the concentration of PH-9 to 10, it can be used as a soil improver (soil neutralizer) in acidified soils or mud. Therefore, products that contain special minerals, such as calcite, can react with the natural rays and help transform microorganisms into the soil.

3) In case of using as a raw material for other health-related products, this product is manufactured by mixing special minerals such as elvan and waste slaked lime, so it can be molded in any form because far infrared rays are emitted and color is expressed. For example, it can be manufactured for use in applications such as far-infrared emitting sheets, bricks, powders, and the like, and can be utilized for general home or business purposes.

4) When used as raw material for special purpose products, the main components of waste slaked lime are Ca and Mg salts. Therefore, if it is pulverized and used as a filler, the biodegradability is increased to reduce the environmental pollution caused by the flooring.

For example, when recycling waste film, which is difficult to be used for agricultural and industrial use, this product is used as a filler to produce garbage bags or packaging films with high price, which can replace the current calcium carbonate. Since it can be used as a synthetic raw material, it can be preferable in terms of environmental protection.

5) And the results of analyzing the components of waste slaked lime and Hell Stone adopted by the present invention are as follows. Its analysis method was analyzed by applying the sample as it was using EDS. Described at the end is a measurement data chart.

<Analysis Results of Waste Slaked Lime and Hell Stone>

(unit : %)

<And the results of the component analysis of the raw materials to be used for the multipurpose obtained by the present invention>

(unit : %)

* Note: The above analysis is a result of analysis by EDS and should be considered as an analysis method with a large analysis error.

Next, the manufacturing process of the present invention will be described.

In the first step, the elvan is sorted (1) and the elvan is sorted into a hopper.

In the second step, as the coarse pulverizing step (2), what is obtained in the first step is put into a pulverizer and coarsely crushed.

In the third step, the waste slaked lime is sorted separately.

In the fourth step, the drying step 4 is dried at a moisture content of less than 43% and then introduced into the hopper.

In the fifth step, as the mixing step (5), the coarse crushed Hell Stone obtained in the second step and the dried waste slaked lime obtained in the fourth step are introduced into a stirrer in a ratio of 1: 2 and mixed. (The compounding ratio is added or subtracted according to the use)

In the sixth step, what is obtained in the fifth step as the firing step 6 is put into a high temperature furnace of 800 ° C. or higher for firing.

In the seventh step, the cooling step (7) is passed through a cooling line obtained in the sixth step and cooled to room temperature.

The eighth step is a fine grinding step (8), which is obtained in the seventh step into a fine grinding machine and finely divided into 300 or more meshes.

The ninth step is a classification step (9), which is classified at the eighth step by passing through a classification processing line.

In the tenth step, the packaging obtained by the ninth step is completed as the completion step (10).

An embodiment according to the above-described construction method will be described in a diagram as follows.

<Detailed manufacturing process of bio material (based on 300 pig product per day)>

◆ Setting the Mixing Ratio of Waste Limestone, Characteristics of Raw Materials and Their Effects => The composition and content of these constituent minerals vary slightly depending on the nature of the waste before treatment (Table 1) and the mixing ratio of composite material addition (Table 2). , The mixing ratio is not experimented by estimating any specific ratio, but generally by mixing (10, 20, 30, 40%). ◆ Characterization of raw materials after treatment and properties after mixing of treated materials => In Table 3, the pH of wastes differs depending on the type of waste (depending on the content of lime), and wastes I and II are 40% And 10% of the solution was close to neutral. Therefore, since it is inefficient to treat wastes in a uniform mixing manner, waste ingredients should be thoroughly investigated immediately before treatment, and the treatment method such as the compounding ratio of the appropriate composite material should be changed accordingly. In addition, X-ray diffraction analysis, chemical analysis and pH measurement need to be performed to investigate the mineral composition of waste. In 1 and 2, the mineral analysis results of X-ray diffraction analysis of the treated material were quartz (Q), feldspar (F), kaolin mineral (K), illite (I), chlorite (Ch) and gypsum ( G), calcite (C), etc. were detected. Since kaolin minerals (K), gypsum (G), and calcite (C) are traces, their illustration is omitted in Figs. 1 and 2. During the implementation of the project, the chemical composition analysis of wastes and processed materials is carried out continuously. Along with the review of the results, constant efforts should be made to develop more efficient formulations, treatment methods and useful recycling methods and uses of the treatments.

As described above, the present invention can not only contribute to industrial development because it can be used as a functional raw material for the development of various products by adding and processing special minerals such as macvanite to the slaked lime waste mass produced as industrial sludge in the process of heavy chemical industry development. This invention is very useful because it can contribute greatly in preventing pollution and using waste resources.

Claims (1)

The process of mixing Hell Stone, a kind of special mineral, and co-crushing it, and drying and drying the waste slaked lime (or limestone), a kind of industrial waste, in a ratio of 1: 2, It is calcined at 800 ℃ or higher, then cooled to room temperature and finely pulverized to 300 mesh or more, which is then subjected to a classification process to obtain a particulate product that can be used for various purposes (bio cement raw materials, fertilizer raw materials, soil improving materials, health-related raw materials, life A method for producing a multi-use raw material for waste slaked lime which can be used as a functional raw material for container raw materials, aquatic resource raw materials, etc.).