Jurnal Riset Teknologi Pencegahan Pencemaran Industri

The Effect of Kaolin Addition as a Binder in Making Pellets Iron Concentrate

2025-01-31T08:45:00+00:00

Pellets iron concentrate are formed from fine particles in the form of iron ore concentrate or iron sand after the ore has undergone the agglomeration stage and taken the shape of tiny, marble-like lumps. Iron pellets are also an important raw element in the steelmaking process. The physical, chemical, and metallurgical standards for iron pellet quality vary depending on the specific processing method used to create the pellets. The purpose of this research is to make iron pellets using iron sand derived from zircon sand processing byproducts by adding binders. There are three primary phases in the production of iron pellets, Mixing of iron pellet materials, the second balling process and the third induration process. Materials needed to make iron pellets include water, binder, and iron ore/sand. Typically, bentonite, limestone, and/or similar compounds are used as binder. However, in this study kaolin was used as a substitute for commercial binders with variations of (5; 10; 15 and 20%) binder. Based on the test results kaolin greatly affects the hardness of iron pellets. This can be seen from the results of the Compression Strength Test an average of 107.8 to 156.9 N/Pellet or the equivalent of 11 to 16 Kg/Pellet and the results of the drop test pellets broke at a height of 3 - 4 meters. This indicates that the pellets contain good qualities and exhibit resistance to impacts or mechanical pressure that may arise during transportation or utilization.

Analysis of mixing coal and biomass fuels on industrial boiler performance

2024-08-01T05:03:05+00:00

The aim of this study is the experimental investigation and characterization of the effects of using biomass mix and coal fuels boilers on the efficiency and environmental impact of industrial boiler combustion. The experimental data collected relates to the coal boiler and biomass mix fuel boiler, and boiler performance parameters. Two different methods for controlling coal and biomass mix fuel feed are considered. One method involves manually controlled biomass mix feed through the boiler control system and one more for use full coal boiler. The boilers control system regulates the intake of coal and biomass mix fuel into the furnace based on combustion chamber temperature and pressure parameters. The results shows that the biomass mix boiler does not significantly affect the combustion process but reduces fuel consumption, better than coal boiler. The findings are expected to provide valuable insights for industry stakeholders and policymakers, promoting the adoption of more sustainable and cost-effective fuel alternatives in industrial applications.

Study of The Influence of Extract Cocoa Pods (Theobroma Cacao) as a Preservative Ingredient on Mahoni Woods (Swietenia Mahogany) Through Cold Soaking on Mechanical Properties

2025-01-31T08:44:28+00:00

An attempt has been made to extend the service life of mahogany wood (Swietenia mahogany) by preserving it. The purpose of this study was to determine the mechanical properties of mahogany wood after cold soaking with preservatives of cocoa pods extract (Theobroma cacao). This research uses an experimental method of cold soaking which is carried out in the Material Testing Laboratory of the Mechanical Engineering Department of Padang State Polytechnic. The preservation process used cacao pod extract preservative solution at concentrations of 0%, 3%, 6%, 9%, 12%, and 15%. The observed responses were the preservative retention values and mechanical properties (compressive strength parallel to the fiber direction, flexural strength, and surface hardness) of the wood. The preservation method applied was cold soaking for 120 hours. The increase in retention value was directly proportional to the increased concentration of extract added. The improved properties of wood (compressive strength in the grain direction and flexural strength) also increased with increasing extract concentration. The results obtained showed that the highest value was obtained at a 15% concentration of the added extract with a retention of 7.6078 kg/cm2, a compressive strength parallel to the fiber of 227.92 kg/m2, and a flexural strength of 387.82 kg/m2. This data shows that cocoa pods extract has the potential to be used as an environmentally friendly wood preservative.