Eel Feed Production Line Update: Steam Conditioning System Upgraded Mid-Project for Client in Japan

A modification has been made to an in-progress 1 t/h eel feed production line order for a client in Japan — at the buyer’s request, the steam conditioning system originally specified has been upgraded to a model with finer temperature control, before equipment fabrication was completed.

Eel feed (for Japanese eel, unagi, aquaculture — a long-established industry in parts of Japan, though increasingly facing supply pressures around wild-caught juvenile eel availability that affect the broader industry, separate from the feed production itself) is unusual among aquaculture feeds in that it’s often produced as a paste or dough-like product rather than dry pellets, at least for certain life stages — eel feed for larger juveniles and adults can be pelletized, but the formula and moisture content differ significantly from typical dry fish feed.

This particular order is for a pelletized formula targeting sub-adult to adult eel, with a formula built around fish meal (a high percentage — eel require a very high protein diet, often 45%+ crude protein), wheat flour, fish oil, and a vitamin premix.

The original steam conditioning system specified met RICHI’s standard parameters for fish feed of this protein level, but the buyer’s quality team — based on their experience with a previous (non-RICHI) line at another facility — requested a unit with more granular steam pressure adjustment, citing sensitivity in how the high fish meal content responds to even small variations in conditioning temperature, affecting pellet water stability in testing they’d conducted previously with samples.

RICHI’s engineering team reviewed the request and confirmed the upgraded conditioner model could be substituted without affecting the rest of the line’s configuration or the project timeline significantly — about a one-week delay to source the upgraded unit, which the buyer accepted given the potential quality benefit.

Fabrication is proceeding with the updated specification, and the revised delivery estimate has been communicated to the buyer — approximately 9 weeks from the modification date, compared to the original 8-week estimate.