Cement Production Line Engineering Solutions

Introduction to the cement production process: A cement production line is a series of equipment that collectively forms a complete cement manufacturing facility. It primarily comprises processes such as crushing and pre-homogenization, raw meal preparation and homogenization, preheating and decomposition, clinker burning, and cement grinding and packaging.

Light-burned Magnesium Calcination Solution

Light‑burned magnesium is produced by calcining magnesite in a rotary kiln at high temperatures ranging from 900 to 1,100°C. It is widely used in various industries, including building materials, chemical engineering, metallurgy, and pharmaceuticals, and serves as an ideal raw material for manufacturing fireproof boards, lightweight partition panels, magnesium sulfate, papermaking, desulfurization processes, and furnace‑protective slagging in steel plants.

Molybdenum Concentrate Roasting Solutions

Project Overview: This project employs an internally fired rotary roasting technology to roast molybdenum oxide, representing an advanced upgrade over traditional reverberatory furnaces and externally fired kilns. With this technology, the recovery rate of molybdenum oxide exceeds 98%, and the sulfur content of the product meets national standards. More than a dozen units are already in operation. Operating Principle: The internally fired molybdenum oxide roasting furnace utilizes an internally fired rotary kiln, using direct coal combustion, flue gas, coke oven gas, or natural gas as the heat source. After drying, the molybdenum sulfide feed contains approximately 5% moisture; it is then conveyed into the rotary kiln for oxidative roasting. The roasted molybdenum oxide is discharged from the kiln outlet.

Titanium Concentrate Roasting Solutions

Project Overview: Titanium iron ore, with its abundant reserves, has become the primary raw material for the titanium industry. However, due to the relatively low TiO₂ grade of titanium iron ore, in order to meet the demands of the industry’s continued growth, it must be upgraded into a high‑grade, titanium‑rich concentrate. The rotary kiln direct reduction process is a coal‑based direct reduction method in which qualified titanium iron ore and a portion of reducing coal are fed into an on‑site storage bin. After batching according to specified proportions, the mixture is conveyed by belt conveyor to the feed end at the kiln tail and introduced into the kiln via a feeding chute. The rotary kiln is inclined at an angle of 2.5°–3°; through the combined action of its rotational motion and inclination, the charge slowly moves toward the discharge end. Reducing coal and combustion coal are injected from the kiln head discharge end, where they burn with a controlled supply of primary air, generating high‑temperature flue gases. These flue gases flow counter‑currently to the charge, heating it to 900–1050°C—with a maximum not exceeding 1150°C—and reducing the titanium iron ore into a high‑grade, titanium‑rich concentrate.

Nickel Laterite Roasting Solutions

Project Overview: The rotary kiln reduction–magnetic separation process for stainless steel production uses metallic iron, reduced directly from the ore itself, as a collector for nickel, enabling highly efficient nickel recovery. To date, this technology has been recognized as successful and is widely regarded in the industry as an economical method for processing residual lateritic nickel ores.

Sand-making process solution

With the rapid development of national infrastructure, the demand for construction sand continues to grow. Faced with a shortage of natural sand resources, many regions in China have witnessed unregulated extraction and illegal mining. In recent years, practices such as reclaiming farmland for sand mining and excavating sand from riverbeds have become widespread, damaging valuable arable land and flood-control embankments while also leading to numerous engineering accidents. As a result, natural sand—a vital resource—has seen its reserves dwindle, its quality deteriorate, and its prices soar. Consequently, identifying alternative sand sources has become an urgent priority, and actively leveraging solid waste materials like tailings and construction debris to replace natural resources and developing manufactured sand and gravel has emerged as one of the key strategies for addressing the growing shortage of construction sand. The state adopts a supportive stance toward the development of manufactured sand, and it is widely believed that, amid the gradual depletion of natural sand reserves, manufactured sand will enjoy even brighter prospects.