ROI Analysis of 100TPD–300TPD Mechanized Vertical Lime Kiln in Vietnam
At present, Vietnam's construction, metallurgy, and chemical industries continue to expand, and the demand for high-purity active lime market is steadily increasing. Coupled with strict local environmental control measures, traditional soil kilns are no longer able to meet the requirements of compliant production. Mechanized vertical lime kilns with a daily output of 100-300 tons are becoming a cost-effective choice for small and medium-sized investors.
From the investment perspective, the complete set of mechanized shaft kilns in this production capacity range has controllable landing costs. The total investment for the 100 ton per day model is about 2-3 million yuan, and the total investment for the 300 ton per day model with complete equipment and civil engineering is about 5-7 million yuan, which is far below the investment threshold for rotary kilns of the same production capacity. The land and infrastructure costs are also lower, with a footprint of only about 3000 square meters.
The advantages of the operation end are more prominent. This type of shaft kiln adopts counterflow heat exchange and fully automated control, and the waste heat recovery system can reduce coal consumption by more than 20%. The comprehensive energy consumption cost per ton of lime is significantly reduced. At the same time, the automation operation compresses the on-site operators to 5-8 people, and the labor cost is only one-third of that of traditional soil kilns. According to the current market situation in Vietnam, the annual gross profit of lime projects in this production capacity range can reach 6-9 million yuan. After deducting operation and maintenance costs, the full investment can be recovered within 12-18 months under normal working conditions, making it a stable investment choice suitable for the local market in Vietnam.
