KR20030004649A - process for produce aggregate use mixture stones of a quarry - Google Patents

Abstract

PURPOSE: A method for manufacturing aggregates using byproducts generated when producing aggregate of broken stone is provided in which strength of aggregate is increased even when the use amount of cement is reduced so that manufacturing cost of ready mixed concrete is reduced. CONSTITUTION: The method for manufacturing aggregate using byproducts generated when producing aggregate of broken stone comprises first step of supplying a certain amount of a mixed stone comprising clay of 40 mm or less generated from an aggregate pit to a fixed quantity supply hopper at a time; second step of cleanly washing the clay and foreign materials by injecting the mixed stone supplied through the first step into a rotary drum type washer fabricated in a cylindrical shape, and transporting the washed water to a wastewater treatment facility; third step of separating the washed aggregate obtained in the second step according to grain sizes, piling coarse aggregate of 40 to 25 mm at yard, transferring the dehydrated aggregate to the next process by dehydrating aggregate of 25 to 5 mm, and dehydrating the collected sand after injecting fine aggregate of 5 to 0.08 mm into a sand sorting screen so that sand having a size up to 0.08 mm is collected; and fourth step of separating fine and coarse aggregate per grain sizes using a grain size separating screen by roundly processing and improving grain shape of the aggregate after supplying the aggregate of 25 to 5 mm and fine aggregate of 5 to 0.08 mm dehydrated in the third step into a grain shape improving and segregation processing impact crusher.

Description

Process for produce aggregate use mixture stones of a quarry}

The present invention is to produce coarse aggregates and fine aggregates of 40 M / M or less mixed stones generated in the process of producing crushed stone in the quarries so that the added value is improved, aggregate aggregates by the production of depleted fine aggregates It relates to an aggregate production method using a mixed stone that can be solved.

Conventional red mixer concrete and asphalt aggregates are crushed by putting the raw stones collected by blasting in the rough stone into the first coarse grinder, and the crushed coarse aggregate is put into the second grinder, where the crushed aggregate is an intermediate grind. As the topsoil of quarries contains a large amount of ocher component, it is pulverized and the particle size is separated by aggregate specifications.

In the conventional method of producing aggregates in the quarry, when the aggregate is produced at the aggregate harvesting site, a large amount of mixed stone of 40 m / m or less mixed with clay components of the topsoil is generated, and this mixed stone is commonly used as an auxiliary material for road works, so its added value is There was a low disadvantage, and because a long period of time must be left in one place before being used for road work, there was a problem of securing the space and managing the surrounding environment at the site.

On the other hand, sand (instructor), which is the main material of concrete and concrete mixer for concrete and civil engineering, uses natural sands collected from the river and the bottom of the river. Since the harvested amount is depleted, artificial sand must be used. Especially, the natural sand collected from the downstream is fine with a promising assembly rate of 2.50 or less, which is required when manufacturing ready-mixer concrete. The additional use of cement is causing the cost to rise.

In order to solve the above problems, the present invention is to process the mixed stone which is a raw material that is discarded through a predetermined processing process to solve the shortage of aggregates, to solve the problem of securing space in the workplace, and to increase the strength by using chain saw The purpose of the present invention is to provide a method for producing aggregates using by-products generated during the production of crushed aggregates, which enables the production of high-strength concrete, and in particular, reduces the amount of cement used, and thus increases the strength. have.

1 is a flow chart illustrating the aggregate production process of the present invention

The present invention is supplied by a fixed amount hopper for a predetermined amount of mixed stone containing less than 40M / M clay powder generated in the aggregate collection site, and the mixed stone is put into a rotary drum type washing machine made of cylindrical shape to clean the clay and foreign matter Washing water is transported to the wastewater treatment plant, and the wastewater process is purified and the purified water is recycled.

Here, the first washed aggregates are separated by particle size, and the coarse aggregate of 40 ~ 25M / M is stored in the field, the aggregate of 25 ~ 5M / M standard is dehydrated and moved to the next process, and the fine aggregate of 5 ~ 0.08M / M is used. The sand is collected from the sand screening sand screen to 0.08M / M and dewatered by the dewatering screen. In addition, dehydrated 25 ~ 5M / M aggregates and 5 ~ 0.08M / M fine aggregates are supplied to the impact granules for improving aggregate granularity and segregation processing, and the aggregates are rounded, and the processed aggregates are fine aggregates by the particle size separation screen. And coarse aggregates are separated by particle size, 25 ~ 5M / M coarse aggregates are separated and stored separately, and 5 ~ 0.08M / M fine aggregates are collected by sand separator. The generated waste water is used without purification, so fine particles are collected again in the fine aggregate sorter.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the mixed stone containing the topsoil generated in the quarry is supplied to the drum type washing machine through the hopper to wash the clay powder on the surface of the crushed stone, and the crushed clay powder is washed by the screen. Grain size is separated into ~ 25M / M coarse aggregate, 25 ~ 5M / M aggregate and fine aggregate less than 5M / M, and coarse aggregate of 40 ~ 25M / M is stored wildly, fine aggregate of 5 ~ 0.08M / M and 25 ~ Supply aggregate of 5M / M to impact crusher to process aggregate round, save 25 ~ 5M / M aggregate first by particle size separation screen, and contain aggregate content of less than 5M / M about 50% water content Maintain sand dehydrator moisture content in 15 ~ 15% and store fine aggregate separately. Meanwhile, the fine aggregate particle size separation and dehydration supply clean water so that the particle size separation is performed smoothly, and the wastewater discharged from the sand dehydrator is supplied again for the sprinkling of the particle size separation screen, and the fine particles contained in the wastewater process Re-use without reuse, to replenish the fines needed for fine aggregates.

Here, the drum type washing machine was applied by the applicant of the present applicant (2001 Patent Application No. 0000077, Name; Seoksan aggregate production method), a cylindrical drum formed with an aggregate inlet at the front end and the aggregate discharge opening at the rear end The small blades and the large blades are formed to protrude toward the center with a predetermined inclination angle at predetermined intervals on the inner circumferential surface of the cylindrical drum, and the driving rollers are closely attached to the outer circumferential surfaces of the lower sides of the cylindrical drum so as to be rotatable. The driving rollers are rotated by the drive motor and the chain so that the cylindrical drum is rotated in a predetermined direction, and the aggregates injected through the aggregate inlet are rearwards along the inclined surfaces of the small blades and the large blade that are integrally rotated in the cylindrical drum. Is moved and discharged through the aggregate discharge port, and the washing water is The soil and foreign matter are then cleaned and separated.

The present invention is to process the mixed stone to be used as aggregate to solve the lack of aggregates, to solve the problem of securing the space of the workplace, the use of such aggregates can be manufactured in high-strength concrete to reduce the use of cement to reduce the cost In addition, it has the effect of compensating for the problems of natural history by improving the granular aggregate and improving the assembly rate.

Claims (2)

The first step of supplying the mixed stone containing less than 40M / M clay powder generated in the aggregate collection by a fixed amount supply hopper by a predetermined amount, and the rotary drum type washer made cylindrical in the mixed stone supplied through the first step The clay and foreign substances are washed cleanly, and the washing water is transported to the wastewater treatment facility for treatment and the second stage and the washed aggregate obtained in the second stage are separated by the particle size according to the size of 40 ~ 25M / M. Aggregate is stored in yard, 25 ~ 5M / M standard aggregate is dehydrated and moved to the next process, and 5 ~ 0.08M / M fine aggregate is dehydrated by collecting sand up to 0.08M / M from sand screen for sand screening. In step 3 and 25 ~ 5M / M aggregate and 5 ~ 0.08M / M fine aggregate dehydrated in the third step, supply aggregate impact improvement and segregation impact impact crusher to process the aggregate round and improve the granularity With separation screen Aggregate production method using by-products generated during the production of crushed aggregates, characterized in that the fourth step of separating the fine aggregate and coarse aggregate by particle size. According to claim 1, The fourth step after the separation of the fine aggregate and coarse aggregate particle size of less than 5M / M aggregate in the sand screen dehydrator, the water is supplied to the water to facilitate the separation of the particle size, the sand dewatering screen Wastewater discharged from the re-supply for the sprinkling of the particle size separation screen again aggregates production method using the by-products generated during the production of crushed aggregates, characterized in that even to collect the particles even 0.08M / M.