New development in science and technology, turning construction waste into treasure

With the continuous development of new building materials, a transportation vehicle will pull construction waste such as broken tiles and cement blocks into the factory area, and transport clean and tidy construction bricks to the construction site. This is the scene I saw on June 22 in Weifang Sanjian Binhai Building Materials Co., Ltd.

This company located in the Hanting District specifically "eats" construction waste. At the scene, the author saw that after construction bricks, rubble, clinker, concrete blocks and other construction wastes entered the factory, they first went through vibration to mud, followed by two-stage crushing, which turned them into mung bean-sized particles, followed by fly ash, Cement, sand, water and other ingredients are mixed according to the proportion, and they are directly molded into the brick machine. The entire process does not need to burn coal, heat, nor produce sewage, smoke. Wang Lianxi, the chairman of Weifang Sanjian Group, picked up a brick and said to the author: “Each piece of solid brick produced can consume more than 4 pounds of construction waste.” He also told the author that, now, in this company's production line, construction Garbage can be turned into concrete solid bricks, pavement bricks, wall materials, recycled ready-mixed concrete and other new building materials as required.

The construction waste recycling project was introduced by Weifang Sanjian Binhai Building Materials Co., Ltd. in 2008. The first phase is a brick project with an investment of 30 million yuan. It has been put into production in March of last year. The second phase of production of recycled concrete has invested 35 million yuan and has also been put into production recently. Wang Lianxi disclosed that once the project reaches production, it can produce 500,000 cubic meters of new building materials, 2.5 million cubic meters of recycled concrete, and 3.6 million cubic meters of construction waste per year. Construction waste in Weifang City can be basically disposed of.

In recent years, with the rapid economic development and accelerated urbanization, the transformation of old cities and the construction of infrastructure have produced a large amount of construction waste. The traditional treatment methods are basically open-pit or simple landfill, which not only consumes a large amount of land, affects the appearance of the city, but also pollutes the environment. It is also a huge waste of resources. As the construction-oriented Weifang Sanjian Group, it smells business opportunities and builds an industrial chain that uses “resources, products, renewable resources” and “production, consumption, and recycling” to produce new types of building materials. A virtuous cycle of development. This not only completely solves the difficult and intractable problem of construction waste disposal, but also has significant social benefits. At the same time, the company itself has also obtained significant economic benefits. According to reports, Weifang Sanjian Binhai Company's sales revenue was nearly 100 million yuan last year, and it is expected to exceed 140 million yuan this year.

In Weifang, recognizing the value of recycling of construction waste, it is not only Weifang San Jian Binhai Company. According to reports, as of the end of last year, there were five comprehensive construction waste utilization enterprises in Weifang City and annual consumption of construction waste was 2.6 million cubic meters. Among them, there are three comprehensive construction waste utilization enterprises in the urban area, which have formed annual production capacity of 900,000 cubic meters of new building materials and 1.25 million cubic meters of commercial concrete, and can use 2.4 million cubic meters of construction waste per year, accounting for about the amount of construction waste generated in urban areas that year. 70%.