Ink
Gilsonite and Carbon Black Dispersion
Carbon black is difficult to disperse. Poor dispersion leads to low colour strength and unstable inks. Gilsonite helps.…
Knowledge Center
Practical, expert articles on gilsonite in drilling fluids, asphalt, foundry, inks, paints, coatings and waterproofing.
Ink
Gilsonite for Newspaper (Coldset) Inks
Coldset news inks dry by absorption into porous newsprint, not by evaporation or oxidation. They need good colour…
Ink
How to Make Gilsonite Ink Varnish
A gilsonite varnish is the base of many black inks. Making it correctly ensures clean, stable ink. 20–40%…
Ink
Gilsonite in Printing Inks: Why Ink Makers Use It
Gilsonite has been used in black printing inks for more than a century. It is especially common in…
Casting
Casting and Carbon Additives: FAQ
Why add carbon to green sand? To create lustrous carbon and a reducing atmosphere that improves surface finish.…
Casting
Brass and Bronze Casting: Getting a Better Surface
Copper alloys are cast at 1000–1200°C and are valued for their appearance. A clean surface reduces polishing. Small…
Casting
Veining Defects and the Role of Additives
Veining appears as thin fins of metal on casting surfaces, usually on cores. It is caused by sand…
Casting
How to Run a Gilsonite Trial in Your Foundry
Switching carbon additives should be done step by step. Record current additive, dosage, LOI, volatiles, sand properties and…
Casting
Mould and Core Coatings Containing Gilsonite
Refractory coatings protect mould and core surfaces from molten metal. Fine gilsonite can enhance their performance. Micronized gilsonite…
Casting
Reducing Casting Costs with Better Carbon Additives
Foundry margins are tight. The carbon additive is a small cost item but influences large costs downstream. Compare…
Casting
Carbon Additives in No-Bake and Chemically Bonded Sands
No-bake (self-setting) sands use resin binders instead of clay. Carbon additives are less common but can be useful.…
Casting
Formulating Facing Sand with Gilsonite
Facing sand is a richer sand mixture placed directly against the pattern to give a better casting surface.…
Our Products
| Product | Particle size | Softening point (R&B) | Typical dosage | |
|---|---|---|---|---|
| Gilsonite Lump | 0 – 50 mm (custom) | 150 – 220 °C | Depends on application. | Spec · MSDS · COA |
| Gilsonite Granular | 1 – 5 mm | 150 – 200 °C | Asphalt: 4–12 % by weight of binder. | Spec · MSDS · COA |
| Gilsonite Powder | 100 – 200 mesh | 150 – 220 °C | Drilling 2–8 lb/bbl · asphalt 4–12 % of binder · foundry 0.3–1.0 % | Spec · MSDS · COA |
| Micronized Gilsonite | 300 – 600 mesh | 150 – 180 °C | Ink varnish: 20–40 % in oil. | Spec · MSDS · COA |
| Drilling Fluid Grade Gilsonite | 75 – 200 µm | 160 – 220 °C (grades) | 2 – 8 lb/bbl | Spec · MSDS · COA |
| Sulphonated Asphalt | — | — | 2 – 6 lb/bbl | Spec · MSDS · COA |
| Cementing Grade Gilsonite | 75 – 200 µm | 160 – 220 °C | 5 – 15 % BWOC | Spec · MSDS · COA |
| Asphalt Modifier Grade Gilsonite | Powder ≤ 200 mesh / granular 1–5 mm | 150 – 200 °C | 4 – 12 % by weight of binder | Spec · MSDS · COA |
| Foundry Grade Gilsonite | 100 – 300 mesh | 150 – 200 °C | 0.3 – 1.0 % (iron) | Spec · MSDS · COA |
| Ink & Paint Grade Gilsonite | 200 – 600 mesh | 150 – 180 °C | Ink varnish: 20–40 % in oil | Spec · MSDS · COA |
| Coating & Waterproofing Grade Gilsonite | ≤ 200 mesh | 150 – 200 °C | 5 – 25 % of compound | Spec · MSDS · COA |
| Sealer & Filler Grade Gilsonite | ≤ 200 mesh | 150 – 180 °C | Sealer: 15 – 35 % | Spec · MSDS · COA |