Low activity quicklime is used in the production of lime sand bricks, aerated concrete bricks and aerated concrete blocks. Malz designed and built a new type of single bore shaft kiln, the Malz High Performance Single Bore shaft Kiln (HPS kiln), and applied for a patent. The kiln consistently produces low-activity quicklime products with good quality and higher energy efficiency. The carbon dioxide in the exhaust gas can be used to precipitate calcium carbonate (PCC), soda ash and sugar industry. Characteristics of Malz high performance single bore shaft kiln; 1. The water-cooled combustion gun is inserted into the hot material area in a circular arrangement and can be adjusted. 2. The operating temperature can be accurately adjusted to produce specific products with different activity degrees. 3. Higher utilization coefficient of kiln volume, compact structure design.