Lignite By Vision Minerals & Energy

LIGNITEFederal's oxidized lignite is a naturally occurring material used to reduce fluid loss and deflocculate water-base muds. LIGNITE is a partially soluble additive which provides thin, low-permeability filter cakes. It is an excellent emulsifier for oil-in-water emulsions as well as a secondary deflocculant and is especially effective in high-temperature applications. It performs exceptionally well in dispersed systems as a synergistic additive with lignosulfonates. It can be used in virtually any water-base fluidTypical Physical PropertiesPhysical appearance- Black powderSpecific gravity- 1.6-1.8pH (1% solution) - 4-5Bulk density 52 Ib/ft3 (833 kg/m3)Typical grind 90-95% < 20 meshApplicationsLIGNITE may be used for rheology and filtration control in all water-base muds. It is especially effective at stabilizing the properties of muds exposed to high temperatures and contaminants such as CO2 and calcium. LIGNITE is especially effective when treating cement contamination. It reduces the high viscosity and pH of  cement-contaminated muds and reacts with calcium to lessen the contaminating effects. 22.8 kg/m3). Due to their low pH, LIGNITE treatments require additional caustic soda, or an alternative alkaline material, to maintain a consistent pH. A normal ratio is 1 sack of caustic soda for every 4 sacks of LIGNITE. In high-salinity systems, it is preferable to premix the LIGNITE in medium-pH fresh water to enhance dispersibility, then add the premix to the active system. LIGNITE is most effective in mud systems with an alkaline pH in the range of 9 to 11.Normal treatments of LIGNITE range from 1 to 8 lb/bbl (2.85 to 22.8 kg/m3). Due to their low pH, LIGNITE treatments require additional caustic soda, or an alternative alkaline material, to maintain a consistent pH. A normal ratio is 1 sack of caustic soda for every 4 sacks of LIGNITE.  In high-salinity systems, it is preferable to premix the LIGNITE in medium-pH fresh water to enhance dispersibility, then add the premix to the active system. LIGNITE is most effective in mud systems with an alkaline pH in the range of 9 to 11.AdvantagesProvides improved filtration controlReduces viscosity and gel strengthsSignificantly extends the temperature stability of water-base fluidsResists the effects of contaminationImproves filter cake quality by reducing its thickness and permeabilityReduces wall-sticking tendenciesStabilizes rheological propertiesCompatible with a wide range of water-base systemsEspecially effective when treating cement contaminationLimitationsLess effective at pH levels below 9.5Toxicity and HandlingBioassay information is available upon request. Handle as an industrial chemical, wearing protective equipment and Material Safety Data Sheet (MSDS). Observing the precautions as described on the Transportation and Material Safety Data Sheet (MSDS)Packaging and StorageLignite is packaged in 50-Ib (22.7-kg), multi-wall, paper sacks. Store in a dry location away from sources of heat or ignition, and minimize dust