Cold pressing starts working before the barrel is loaded

Grading bench

Four working grades are enough for a small mill

Commercial almond grading has many size and defect classes, but a small pressing room only needs four working grades: whole blanched, whole natural, broken or chipped, and reject. Sorting into these four — and writing the share of each on the lot card — settles most later arguments about oil color, sediment, and cake quality before the press is even loaded.

• Whole blanched: press as dedicated lots; oil and cake both sit in the highest value tier.
• Whole natural: warmer, deeper-colored oil; keep separate from blanched lots so both keep their identity.
• Broken or chipped: sound feed, but it ages faster in storage; grade it out and manage it as its own lot.
• Reject — rancid smell, mold, discolored, foreign matter: out of the press room entirely. It costs more in cleaning and complaints than it yields in oil.

Broken lots

Broken kernels: press them sooner, keep them separate

Feed routine

From lot card to loaded barrel

Almond is on the factory cold-press oilseed list, so the feed routine has no heating step: check, crush, load, press.

• Check moisture before crushing; soft, oil-rich almond kernels press well in the normal storage-dry range, and a damp lot should be dried and re-checked rather than pressed wet.
• Crush gently at ambient temperature to an even crumb — no pre-heating on the cold route. Uniform crumb loads evenly and presses evenly.
• Load the Ø390×800 mm barrel as a weighed batch of up to 100 kg and note the weight on the batch card; a weighed barrel keeps yield arithmetic honest.
• Press on the 355–500 class cold models (370–630 ton, 60 MPa system, 2.2 kW motor): pure pressing runs about 2 hours per barrel, and two barrels including loading take roughly 4.5 hours.
• Judge the preparation by the cake: a well-prepared feed presses toward the general residual-oil target of about ≤5%.

Day plan

Planning a pressing day around the barrel cycle

With roughly 4.5 hours for two barrels including loading, a single-press room realistically runs two to four barrels in a working day depending on shift length. The grading bench should stay half a day ahead of the press: while one barrel presses, the next lot is graded, weighed, and carded. Batch records written in that rhythm cost minutes; batch records reconstructed a week later cost afternoons.

Project boundary

What to confirm before scoping Almond Kernel Grading and Press-Feed Prep for Cold Pressing

Almond Kernel Grading and Press-Feed Prep for Cold Pressing should not be quoted from an equipment name alone. Check feed lots, target oil, post-press handling, and packing rhythm in one scope before deciding which Almond Oil Press modules stay. Factory cold-press page lists this oilseed — prioritize 355–500 (370–630 ton), pure press ~2 h/barrel.

When feed condition, moisture, impurities, batch weight, and product position are unclear, press tonnage and filter area become guesswork. Factory systems share 60 MPa and 2.2 kW motors; hot pure press is 30–40 min/barrel and cold pure press is ~2 h/barrel — cycle time matters more than brochure tonnage.

• Confirm whether feed is whole seed, kernels, pretreated material, or an existing semi-finished stream.
• Confirm whether the target is crude oil, filtered oil, bottled oil, drum ingredient oil, or a refining handoff.
• Hot cycle reference: pure press 30-40 min/barrel, ~1.5 h for 2 barrels with loading; cold pure press ~2 h/barrel, ~4.5 h for 2 barrels.
• Confirm batch rhythm, labor, changeover, retained samples, power (often 380V/50Hz/3ph), and site install conditions.

Factory model check

Match hot / cold models to factory hard data

Pin models to published factory specs before tonnage talk.

Hot 300/325: 300–325 ton, 60 MPa system, standard barrel Ø390×800 mm / max 100 kg, pure press 30–40 min/barrel, ~1.5 h for 2 barrels with loading, 2.2 kW motor. Cold 355/400/426/480/500: 370–630 ton, integrated frame, same 100 kg standard barrel, pure press ~2 h/barrel, ~4.5 h for 2 barrels with loading; optional Ø300 high-pressure barrel max 60 kg. Residual oil target ~≤5% (peanut hot often 6–8% measured).

• Standard barrel Ø390×800 mm, max ~100 kg crushed feed; optional Ø300 high-pressure barrel max ~60 kg.
• Cylinder material 27SiMn; cold frames are integrated molded steel; hot frames are typically H-type channel steel.
• Factory cold-press page lists this oilseed — prioritize 355–500 (370–630 ton), pure press ~2 h/barrel.

Equipment check

Preparation needs to land in equipment interfaces

Once the route is clear, write the interfaces: how preparation feeds the press, how oil leaves the press, how filtration connects to tanks, and how packing receives finished oil.