Proses Produksi PT Semen Padang

Summary

The video outlines the production process at PT Semen Padang, established in 1910. Initially utilizing a wet process, the factory has transitioned to a dry process, emphasizing efficiency and environmental synergy. Key materials such as limestone, silica, clay, and iron sand are sourced primarily from West Sumatra. The production involves crushing, grinding, and heating raw materials in a kiln to produce clinker, which is then ground with gypsum and other additives. Quality control is integrated throughout the process, ensuring compliance with international standards. The company's commitment extends beyond quality products, aiming to be an environmentally conscious leader in the cement industry.

Takeaways

• 🏭 The production process at PT Semen Padang began in 1910, initially using a wet process before transitioning to a dry process.
• 🪨 The main raw materials for cement production include limestone, silica stone, clay, and iron sand.
• 📊 Limestone constitutes 80% of the material sourced from the Karang Putih Indarung hill.
• 🌍 Local sources in West Sumatra provide 5-10% of clay and silica used in cement production.
• 🔍 Iron sand accounts for 1-3% of the materials, also sourced locally.
• 💥 The crushing of large limestone blocks is done using a crusher to reduce them to approximately 40 mm in size.
• ⚙️ After crushing, materials are conveyed to storage before being ground and dried using hot gases from the kiln.
• 🌡️ The resulting mix is processed into clinker at temperatures reaching 1402 °C, using coal as the energy source.
• 🌀 The final grinding involves clinker, gypsum, limestone, and fly ash, with the proportions varying based on the cement type.
• 🚚 Cement produced is stored in silos and distributed via land and sea to domestic and international markets.

Q & A

What production process was originally used by PT Semen Padang when it was established?

PT Semen Padang originally used the wet process, known as the white process, when it was established in 1910.

What type of production process is currently being utilized by PT Semen Padang?

Currently, PT Semen Padang utilizes the dry process in their production.

What are the main raw materials used in the cement production process?

The main raw materials used are limestone, silica stone, clay, and iron sand.

What percentage of limestone is used in the cement production process?

Limestone is used in quantities ranging from 80% to 85% in the production process.

Where does PT Semen Padang source its limestone?

The limestone is primarily sourced from the Karang Putih Indarung hill.

What happens to the large limestone rocks after mining?

The large limestone rocks are crushed by a crusher until they are approximately 40 mm in size.

How are the raw materials processed after crushing?

After crushing, the limestone and silica stones are sent via conveyor belts to the storage area, where they are ground and dried using hot gas from the kiln.

What is the temperature reached during the clinker production process?

During the clinker production process, temperatures can reach up to 1400 degrees Celsius.

What are the additional materials mixed with clinker during the final grinding?

During final grinding, gypsum, limestone, and fly ash are mixed with the clinker.

What certifications does PT Semen Padang hold regarding quality management?

PT Semen Padang holds certifications for quality management systems under SNI ISO 9001:2015 and environmental management under SNI ISO 14001:2015.