Quanzhou Huatai - Application of GLB3000 Asphalt Mixing Plant

Application Field Asphalt Mixing Plant
Equipment Model GLB3000 Type
Time-to-market 2013
Case Area
Highlights of the Equipment Fuel Saving, Efficient Screening System, and Wear-resistant Parts

Client Introduction

Quanzhou Huatai Construction Engineering Co., Ltd. is secondary construction company of municipal engineering in Quanzhou. In 2013, NFLG GLB3000 type asphalt mixing plant was purchased and put into operation in early 2014, and the cumulative production of finished asphalt materials are 300,000 tons since being put into production. The finished asphalt materials produced are mainly supplied for municipal construction projects in Quanzhou and the surrounding area. Fuel saving, efficient screening performance and wear-resistant parts are the main reasons to trust NFLG by Quanzhou Huatai Construction Engineering Co., Ltd.

Equipment Configuration

NFLG GLB3000 Asphalt Mixing Plant

Equipment Description

In the asphalt mixing plant, the cost of fuel is the largest consumption, so the scientific and reasonable design of the entire equipment will directly affect the heat exchange efficiency of the asphalt mixing plant, thereby reducing the fuel consumption of the entire equipment.

A crucial item in fuel costs is the material storage and the reasonable design of the site. The rational stacking and rainproof processing of the front end of aggregates and the rapid rainwater discharge in the site may allow lower moisture content of the aggregate, to further reduce the fuel amount. If the moisture content of aggregate is more than 5%, the aggregate may consume more calories due to the water. Through calculation, if the moisture content of aggregate is reduced by one percent point, 9% of fuel consumption can be saved.

Based on the many rainy days, typhoon days in summer and location in mountain area and other features in user’s equipment site, NFLG shall provide site layout plan accordingly, recommend Huatai to use the structure of separating wall for material yard, and build a canopy cover to avoid water accumulation in the aggregate yard and effectively avoid mixing and aggregate moisture due to rain water.

In order to achieve efficient heat exchange efficiency and save every expenditure for customer in the actual use, in the equipment structure design, the optimization design of drying drum feeding blade structure, the negative pressure structure for a full set of equipment, effective fog control accuracy of drying burner and precision and intelligent fuel distribution technology of fuel capacity may provide a powerful heat exchange efficiency for the heat system of the complete set of asphalt mixing plant, which have a direct impact on the fuel consumption performance of the asphalt mixing plant.

NFLG burner adopts automation control, having the advantages such as quick fuel heating (sufficient burning) and high burning efficiency. For the production of every ton of finished materials, the fuel consumption now is probably about 5.5 liters to 5.8 litres, but now, it requires only more than 5 liters down from more than 6 liters in the past, saving 1 liter of fuel, which is more fuel-efficient.

During the use, if 300,000 tons of asphalt mixtures are produced by the asphalt mixing plant in Huatai, Huatai can directly save 300,000 liters of fuel. If the average market price of fuel per liter is 3.3 Yuan, 990,000 Yuan of fuel cost can be saved per year.

In order to achieve the best fuel saving effect, the optimization design of equipment structure is also crucial. The optimization design shall be conducted for the drying drum of asphalt mixing plant by NFLG using software co-simulation technology, and the retention time of materials within the drying drum shall be optimized, so that the aggregate can form a uniform material curtain, to achieve efficient heat transfer with the hot air, ensure the heating temperature of aggregate and control the waste gas temperature between 90℃ - 110℃, which avoid the waste gas condensation and fuel loss due to high temperature.

Efficient screening performance and good grading precision are the prerequisites for the production of high-quality asphalt mixture. The NFLG asphalt vibrating screen has a good match of frequency and amplitude, its grading precision can be 95% or more, which is able to complete all kinds of harsh working conditions. The vibrating screen is driven by vibration motor. In comparison to the vibration mode of double eccentric shaft, 12.4 degrees of electric energy can be saved per hour for this vibrating screen; if the vibrating screen works 10 hours a day in Huatai, about 124 Yuan of electricity price can be saved every day.

The latest conceptual twin shaft mixer has strong mixing capability, low energy consumption and equipped with the high-performance wear-resistant parts, which have 2~3 times of service life as long as that of conventional material, and also have superior wear resistance and can be used in harsh environment.

In the face of increasingly fierce market competition, the market profit margin is gradually narrowed, and the asphalt manufacturers have to seek a breakthrough of the long-term development. In order to achieve higher economic efficiency and enhance market competitiveness, the selection of a asphalt mixing plant with lower comprehensive operating costs, more stable performance and higher energy efficiency is to win the trust of owners for Quanzhou Huatai Construction Engineering Co., Ltd. and is an avenue to success for enterprise investment to obtain stable returns.

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