Technological Regulations for Dismantling and Cutting Metal Structures
The process of recycling construction scrap metal begins long before it enters the smelting furnace. The fundamental stage is dismantling and cutting. This is a complex engineering and technical set of measures that requires specialized equipment, licensed personnel, and strict compliance with occupational safety standards.
Dismantling works cover an extremely wide range of objects. Specialized companies carry out the demolition of old emergency buildings, brick houses, high-altitude dismantling of concrete and reinforced concrete objects (including chimneys), disassembly of hangars, canopies, temporary structures, worn-out pipelines, and even railway tracks and rolling stock. To perform such tasks, excavators with hydraulic breakers and hydraulic shears are used, capable of biting through massive reinforced concrete beams, separating the mineral component from the rebar frame. Special attention is required for work in dense urban areas (for example, in the center of Kyiv) or at operating industrial enterprises, where dismantling must be carried out without vibration and in strictly confined spaces.
After the collapse of the structures comes the stage of cutting the metal into oversized pieces suitable for transportation and subsequent loading into furnaces. The choice of cutting method depends on the type of metal. For ferrous metals, oxy-fuel cutting (autogenous cutting using oxygen and propane) is most often used, which ensures high productivity when working with thick-walled beams and channels. For working with non-ferrous metals, which have high thermal conductivity and specific melting temperatures, gas cutters, plasma cutting, and professional angle grinders are used.
The cost of industrial dismantling and cutting of metal structures is closely related to the price of the scrap itself. A standard has formed in the market, according to which the base price for dismantling is about 6000 UAH per ton. Separately, the cutting service can be tariffed from 500 UAH per 1 ton for both ferrous and non-ferrous metals. However, in practice, an effective offset mechanism operates: the cost of the dismantling work performed is deducted from the total value of the scrap metal obtained at the exit. The economic law of economies of scale works — the larger the volume of metal that can be extracted from the object, the lower the specific cost of dismantling works per unit of weight, which makes large-scale projects highly profitable for both the contractor and the customer.
Environmental Standards and Waste Classification in the Circular Economy
The problem of construction waste disposal cannot be considered in isolation from the global environmental agenda and national legislation. Uncontrolled dumping of construction waste leads to soil degradation and groundwater pollution. Therefore, the first step towards effective management is strict classification. The entire subsequent processing chain depends on the actual separation of materials by fractions at the construction site itself.
Legal market participants strictly adhere to the State Standards of Ukraine, among which the basic ones are DSTU 4121-2002 “Secondary ferrous metals” and DSTU 3211:2009 (GOST 1639:2009) “Scrap and waste of non-ferrous metals and alloys”. These regulatory documents strictly regulate the radiological control of raw materials, the permissible level of contamination, and labeling rules. Special attention is paid to the handling of hazardous waste that often accompanies old metal structures. For example, asbestos insulation, remnants of toxic paints, industrial oils, and acidic electrolytes from batteries require specific neutralization methods.
A shadow sector of scrap metal collection operates in parallel on the market, ignoring these environmental requirements. Illegal points (so-called “garage” collections) often resort to barbaric methods of raw material purification: burning polymer insulation from copper cables on an open fire (which leads to dioxin emissions) or draining spent electrolyte directly into the soil. Cooperation of construction companies with such entities carries not only ethical but also colossal legal and financial risks in the form of fines from the State Environmental Inspectorate. Instead, professional licensed traders invest in modern cable stripping machines that mechanically remove insulation without harming the environment, and conclude official contracts for the disposal of associated hazardous waste.
Engineering and Logistics Infrastructure for Waste Removal
The economic efficiency of scrap metal recycling and construction waste removal critically depends on transport logistics. The specifics of the cargo (high density of metal, abrasiveness of concrete debris, non-standard dimensions of structures) make it impossible to use conventional general-purpose trucks. Leading companies in the industry form diversified fleets to meet various needs.
For fulfilling small orders in the dense urban development of Kyiv (for example, removal of old radiators, cast-iron bathtubs, or a small number of bags with brick remnants), light commercial vehicles of the “Gazel” type (standard and extended wheelbases), minibuses, or light Isuzu trucks with a lifting capacity of 1 to 4 tons are used. They provide high maneuverability and access to narrow courtyards.
However, the basis of industrial logistics are scrap trucks with manipulators based on heavy chassis (DAF, MAN, KamAZ) with a lifting capacity of 5 to 14 tons, and the total weight of the cargo as part of a road train can reach 25 tons. The presence of a hydraulic manipulator with a grapple attachment is a critical advantage. This equipment allows a single operator to independently load cut metal structures weighing from 1 to 3 tons each. This approach completely eliminates the need to involve a team of loaders, radically reduces the risk of occupational injuries, and reduces the truck’s idle time during loading to 30-90 minutes.
Another innovation actively being implemented at long-term dismantling sites is the system of replaceable bunkers (containers). The trader installs a metal container with a volume of 15 cubic meters or more (a so-called skip) on the customer’s territory. Over several days or weeks, builders gradually fill it with scrap metal or mineral waste. Upon reaching full capacity, a special hook-lift garbage truck picks up the full bunker, simultaneously leaving an empty one. This eliminates the problem of waste accumulation on the site and optimizes transport costs.
